./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.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/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.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 5d3b64744a19af136ca9c439b2264a15465f658e2e3d4a576a98d96e4b8aff92 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:16:45,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:16:45,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:16:45,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:16:45,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:16:45,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:16:45,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:16:45,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:16:45,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:16:45,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:16:45,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:16:45,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:16:45,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:16:45,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:16:45,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:16:45,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:16:45,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:16:45,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:16:45,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:16:45,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:16:45,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:16:45,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:16:45,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:16:45,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:16:45,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:16:45,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:16:45,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:16:45,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:16:45,686 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:16:45,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:16:45,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:16:45,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:16:45,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:16:45,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:16:45,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:16:45,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:16:45,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:16:45,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:16:45,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:16:45,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:16:45,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:16:45,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:16:45,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d3b64744a19af136ca9c439b2264a15465f658e2e3d4a576a98d96e4b8aff92 [2024-11-16 08:16:45,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:16:45,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:16:45,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:16:45,993 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:16:45,993 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:16:45,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2024-11-16 08:16:47,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:16:47,669 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:16:47,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2024-11-16 08:16:47,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3eff4bef/5dadbc65569b451e9d4d7c2de9a70a7f/FLAG7d27c7886 [2024-11-16 08:16:48,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3eff4bef/5dadbc65569b451e9d4d7c2de9a70a7f [2024-11-16 08:16:48,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:16:48,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:16:48,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:16:48,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:16:48,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:16:48,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3209a126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48, skipping insertion in model container [2024-11-16 08:16:48,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:16:48,318 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/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2024-11-16 08:16:48,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:16:48,334 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:16:48,393 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/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2024-11-16 08:16:48,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:16:48,419 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:16:48,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48 WrapperNode [2024-11-16 08:16:48,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:16:48,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:16:48,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:16:48,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:16:48,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,468 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 278 [2024-11-16 08:16:48,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:16:48,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:16:48,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:16:48,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:16:48,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,483 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,497 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 08:16:48,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,507 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:16:48,522 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:16:48,522 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:16:48,523 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:16:48,523 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (1/1) ... [2024-11-16 08:16:48,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:16:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:48,553 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 08:16:48,555 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 08:16:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:16:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:16:48,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:16:48,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:16:48,695 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:16:48,697 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:16:49,035 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-16 08:16:49,036 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:16:49,048 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:16:49,048 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:16:49,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:16:49 BoogieIcfgContainer [2024-11-16 08:16:49,049 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:16:49,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:16:49,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:16:49,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:16:49,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:16:48" (1/3) ... [2024-11-16 08:16:49,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ad7517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:49, skipping insertion in model container [2024-11-16 08:16:49,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:48" (2/3) ... [2024-11-16 08:16:49,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ad7517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:49, skipping insertion in model container [2024-11-16 08:16:49,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:16:49" (3/3) ... [2024-11-16 08:16:49,057 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2024-11-16 08:16:49,072 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:16:49,073 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:16:49,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:16:49,138 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;@2fb54bb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:16:49,139 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:16:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 72 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-16 08:16:49,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:49,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:49,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:49,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash -203719005, now seen corresponding path program 1 times [2024-11-16 08:16:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483654646] [2024-11-16 08:16:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:49,435 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 08:16:49,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483654646] [2024-11-16 08:16:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483654646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:49,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:49,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 08:16:49,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605777720] [2024-11-16 08:16:49,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:49,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 08:16:49,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 08:16:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 08:16:49,470 INFO L87 Difference]: Start difference. First operand has 73 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 72 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:49,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:49,493 INFO L93 Difference]: Finished difference Result 117 states and 187 transitions. [2024-11-16 08:16:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 08:16:49,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-16 08:16:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:49,503 INFO L225 Difference]: With dead ends: 117 [2024-11-16 08:16:49,504 INFO L226 Difference]: Without dead ends: 68 [2024-11-16 08:16:49,506 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 08:16:49,512 INFO L432 NwaCegarLoop]: 116 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, 116 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 08:16:49,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-16 08:16:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-16 08:16:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 112 transitions. [2024-11-16 08:16:49,555 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 112 transitions. Word has length 23 [2024-11-16 08:16:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:49,555 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 112 transitions. [2024-11-16 08:16:49,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2024-11-16 08:16:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-16 08:16:49,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:49,558 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:49,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:16:49,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:49,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:49,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1200791358, now seen corresponding path program 1 times [2024-11-16 08:16:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934139295] [2024-11-16 08:16:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:49,832 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 08:16:49,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934139295] [2024-11-16 08:16:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934139295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:49,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:49,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935575514] [2024-11-16 08:16:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:49,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:49,839 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:49,950 INFO L93 Difference]: Finished difference Result 150 states and 236 transitions. [2024-11-16 08:16:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:16:49,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-16 08:16:49,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:49,956 INFO L225 Difference]: With dead ends: 150 [2024-11-16 08:16:49,966 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 08:16:49,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:49,968 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 59 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:49,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 403 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 08:16:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 68. [2024-11-16 08:16:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.328358208955224) internal successors, (89), 67 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2024-11-16 08:16:49,982 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 23 [2024-11-16 08:16:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:49,982 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2024-11-16 08:16:49,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2024-11-16 08:16:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 08:16:49,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:49,985 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:49,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:16:49,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:49,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 478861228, now seen corresponding path program 1 times [2024-11-16 08:16:49,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:49,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692850534] [2024-11-16 08:16:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:49,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:50,229 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 08:16:50,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:50,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692850534] [2024-11-16 08:16:50,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692850534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:50,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:50,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15609545] [2024-11-16 08:16:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:50,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:50,237 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:50,454 INFO L93 Difference]: Finished difference Result 380 states and 569 transitions. [2024-11-16 08:16:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:16:50,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-16 08:16:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:50,457 INFO L225 Difference]: With dead ends: 380 [2024-11-16 08:16:50,458 INFO L226 Difference]: Without dead ends: 341 [2024-11-16 08:16:50,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:16:50,459 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 483 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:50,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 921 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-16 08:16:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 104. [2024-11-16 08:16:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 103 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 145 transitions. [2024-11-16 08:16:50,478 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 145 transitions. Word has length 45 [2024-11-16 08:16:50,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:50,479 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 145 transitions. [2024-11-16 08:16:50,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 145 transitions. [2024-11-16 08:16:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 08:16:50,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:50,480 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:50,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:16:50,481 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:50,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1381467346, now seen corresponding path program 1 times [2024-11-16 08:16:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:50,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292863320] [2024-11-16 08:16:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:50,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:50,800 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 08:16:50,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292863320] [2024-11-16 08:16:50,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292863320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:50,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:50,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165959680] [2024-11-16 08:16:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:50,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:50,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:50,804 INFO L87 Difference]: Start difference. First operand 104 states and 145 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:50,918 INFO L93 Difference]: Finished difference Result 182 states and 263 transitions. [2024-11-16 08:16:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:50,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 08:16:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:50,919 INFO L225 Difference]: With dead ends: 182 [2024-11-16 08:16:50,919 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 08:16:50,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:50,921 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 135 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:50,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 251 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 08:16:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2024-11-16 08:16:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2024-11-16 08:16:50,941 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 47 [2024-11-16 08:16:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:50,942 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2024-11-16 08:16:50,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2024-11-16 08:16:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 08:16:50,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:50,945 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:50,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:16:50,946 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:50,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1848004438, now seen corresponding path program 1 times [2024-11-16 08:16:50,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:50,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254592505] [2024-11-16 08:16:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:50,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,026 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 08:16:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254592505] [2024-11-16 08:16:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254592505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877447933] [2024-11-16 08:16:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:51,028 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,048 INFO L93 Difference]: Finished difference Result 242 states and 354 transitions. [2024-11-16 08:16:51,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:51,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 08:16:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,051 INFO L225 Difference]: With dead ends: 242 [2024-11-16 08:16:51,051 INFO L226 Difference]: Without dead ends: 167 [2024-11-16 08:16:51,052 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 08:16:51,053 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 37 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:51,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 150 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:51,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-16 08:16:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2024-11-16 08:16:51,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4355828220858895) internal successors, (234), 163 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2024-11-16 08:16:51,062 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 48 [2024-11-16 08:16:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,063 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2024-11-16 08:16:51,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2024-11-16 08:16:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:51,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,065 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:16:51,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1894476176, now seen corresponding path program 1 times [2024-11-16 08:16:51,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811287999] [2024-11-16 08:16:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,131 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 08:16:51,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811287999] [2024-11-16 08:16:51,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811287999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605435786] [2024-11-16 08:16:51,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:51,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:51,133 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,150 INFO L93 Difference]: Finished difference Result 309 states and 454 transitions. [2024-11-16 08:16:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,152 INFO L225 Difference]: With dead ends: 309 [2024-11-16 08:16:51,152 INFO L226 Difference]: Without dead ends: 234 [2024-11-16 08:16:51,152 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 08:16:51,153 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 49 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:51,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 194 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-16 08:16:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2024-11-16 08:16:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4521739130434783) internal successors, (334), 230 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2024-11-16 08:16:51,176 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 49 [2024-11-16 08:16:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,176 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2024-11-16 08:16:51,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2024-11-16 08:16:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:51,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,181 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:16:51,182 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash 893066448, now seen corresponding path program 1 times [2024-11-16 08:16:51,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954527526] [2024-11-16 08:16:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,245 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 08:16:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954527526] [2024-11-16 08:16:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954527526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767526917] [2024-11-16 08:16:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:51,247 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,273 INFO L93 Difference]: Finished difference Result 605 states and 896 transitions. [2024-11-16 08:16:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:51,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,277 INFO L225 Difference]: With dead ends: 605 [2024-11-16 08:16:51,277 INFO L226 Difference]: Without dead ends: 406 [2024-11-16 08:16:51,277 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 08:16:51,279 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 47 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:51,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 200 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-16 08:16:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 403. [2024-11-16 08:16:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.4577114427860696) internal successors, (586), 402 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 586 transitions. [2024-11-16 08:16:51,301 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 586 transitions. Word has length 49 [2024-11-16 08:16:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,302 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 586 transitions. [2024-11-16 08:16:51,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 586 transitions. [2024-11-16 08:16:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:51,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:16:51,305 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 878616592, now seen corresponding path program 1 times [2024-11-16 08:16:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726145328] [2024-11-16 08:16:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,384 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 08:16:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726145328] [2024-11-16 08:16:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726145328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411642534] [2024-11-16 08:16:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:51,386 INFO L87 Difference]: Start difference. First operand 403 states and 586 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,409 INFO L93 Difference]: Finished difference Result 1097 states and 1610 transitions. [2024-11-16 08:16:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,413 INFO L225 Difference]: With dead ends: 1097 [2024-11-16 08:16:51,413 INFO L226 Difference]: Without dead ends: 726 [2024-11-16 08:16:51,413 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 08:16:51,414 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 45 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:51,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 202 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-16 08:16:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 723. [2024-11-16 08:16:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.443213296398892) internal successors, (1042), 722 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1042 transitions. [2024-11-16 08:16:51,436 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1042 transitions. Word has length 49 [2024-11-16 08:16:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,436 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1042 transitions. [2024-11-16 08:16:51,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1042 transitions. [2024-11-16 08:16:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:51,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,437 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:16:51,437 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1324747952, now seen corresponding path program 1 times [2024-11-16 08:16:51,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378257516] [2024-11-16 08:16:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,485 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 08:16:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378257516] [2024-11-16 08:16:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378257516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893362905] [2024-11-16 08:16:51,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:51,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:51,487 INFO L87 Difference]: Start difference. First operand 723 states and 1042 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,526 INFO L93 Difference]: Finished difference Result 2009 states and 2894 transitions. [2024-11-16 08:16:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:51,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,532 INFO L225 Difference]: With dead ends: 2009 [2024-11-16 08:16:51,533 INFO L226 Difference]: Without dead ends: 1318 [2024-11-16 08:16:51,534 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 08:16:51,537 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 43 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:51,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-11-16 08:16:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1315. [2024-11-16 08:16:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.4140030441400304) internal successors, (1858), 1314 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1858 transitions. [2024-11-16 08:16:51,583 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1858 transitions. Word has length 49 [2024-11-16 08:16:51,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,584 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 1858 transitions. [2024-11-16 08:16:51,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1858 transitions. [2024-11-16 08:16:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:51,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:16:51,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1849025007, now seen corresponding path program 1 times [2024-11-16 08:16:51,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586100139] [2024-11-16 08:16:51,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,816 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 08:16:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586100139] [2024-11-16 08:16:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586100139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 08:16:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023151946] [2024-11-16 08:16:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:16:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:16:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:51,818 INFO L87 Difference]: Start difference. First operand 1315 states and 1858 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,886 INFO L93 Difference]: Finished difference Result 1414 states and 1988 transitions. [2024-11-16 08:16:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:16:51,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,891 INFO L225 Difference]: With dead ends: 1414 [2024-11-16 08:16:51,891 INFO L226 Difference]: Without dead ends: 1411 [2024-11-16 08:16:51,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:51,892 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:51,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 565 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2024-11-16 08:16:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2024-11-16 08:16:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 1.3801418439716313) internal successors, (1946), 1410 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1946 transitions. [2024-11-16 08:16:51,931 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1946 transitions. Word has length 49 [2024-11-16 08:16:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,931 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 1946 transitions. [2024-11-16 08:16:51,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1946 transitions. [2024-11-16 08:16:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:51,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:16:51,933 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2053181565, now seen corresponding path program 1 times [2024-11-16 08:16:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201881355] [2024-11-16 08:16:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:16:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201881355] [2024-11-16 08:16:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201881355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004435198] [2024-11-16 08:16:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:52,058 INFO L87 Difference]: Start difference. First operand 1411 states and 1946 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,253 INFO L93 Difference]: Finished difference Result 6858 states and 9492 transitions. [2024-11-16 08:16:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,275 INFO L225 Difference]: With dead ends: 6858 [2024-11-16 08:16:52,276 INFO L226 Difference]: Without dead ends: 5863 [2024-11-16 08:16:52,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:52,279 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 347 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 521 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2024-11-16 08:16:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 2603. [2024-11-16 08:16:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 1.3750960799385088) internal successors, (3578), 2602 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 3578 transitions. [2024-11-16 08:16:52,400 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 3578 transitions. Word has length 68 [2024-11-16 08:16:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,401 INFO L471 AbstractCegarLoop]: Abstraction has 2603 states and 3578 transitions. [2024-11-16 08:16:52,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 3578 transitions. [2024-11-16 08:16:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:52,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,403 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:16:52,403 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1051771837, now seen corresponding path program 1 times [2024-11-16 08:16:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006355679] [2024-11-16 08:16:52,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:16:52,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006355679] [2024-11-16 08:16:52,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006355679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529005261] [2024-11-16 08:16:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:52,547 INFO L87 Difference]: Start difference. First operand 2603 states and 3578 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,801 INFO L93 Difference]: Finished difference Result 8234 states and 11388 transitions. [2024-11-16 08:16:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:52,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,824 INFO L225 Difference]: With dead ends: 8234 [2024-11-16 08:16:52,824 INFO L226 Difference]: Without dead ends: 6855 [2024-11-16 08:16:52,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:52,828 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 344 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 515 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:52,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2024-11-16 08:16:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 4475. [2024-11-16 08:16:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4475 states, 4474 states have (on average 1.3719266875279392) internal successors, (6138), 4474 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6138 transitions. [2024-11-16 08:16:52,989 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6138 transitions. Word has length 68 [2024-11-16 08:16:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,989 INFO L471 AbstractCegarLoop]: Abstraction has 4475 states and 6138 transitions. [2024-11-16 08:16:52,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6138 transitions. [2024-11-16 08:16:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:52,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,992 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:16:52,992 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1037321981, now seen corresponding path program 1 times [2024-11-16 08:16:52,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950164769] [2024-11-16 08:16:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:16:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:53,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950164769] [2024-11-16 08:16:53,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950164769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:53,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:53,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:53,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509758392] [2024-11-16 08:16:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:53,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:53,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:53,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:53,117 INFO L87 Difference]: Start difference. First operand 4475 states and 6138 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:53,368 INFO L93 Difference]: Finished difference Result 9610 states and 13276 transitions. [2024-11-16 08:16:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:53,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:53,406 INFO L225 Difference]: With dead ends: 9610 [2024-11-16 08:16:53,406 INFO L226 Difference]: Without dead ends: 8231 [2024-11-16 08:16:53,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:53,416 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 370 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:53,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 482 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8231 states. [2024-11-16 08:16:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8231 to 5851. [2024-11-16 08:16:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 5850 states have (on average 1.371965811965812) internal successors, (8026), 5850 states have internal predecessors, (8026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8026 transitions. [2024-11-16 08:16:53,659 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8026 transitions. Word has length 68 [2024-11-16 08:16:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:53,659 INFO L471 AbstractCegarLoop]: Abstraction has 5851 states and 8026 transitions. [2024-11-16 08:16:53,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8026 transitions. [2024-11-16 08:16:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:53,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:53,661 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:53,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:16:53,662 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:53,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:53,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1166042563, now seen corresponding path program 1 times [2024-11-16 08:16:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195206552] [2024-11-16 08:16:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:16:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:53,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195206552] [2024-11-16 08:16:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195206552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:53,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229490487] [2024-11-16 08:16:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:53,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:53,787 INFO L87 Difference]: Start difference. First operand 5851 states and 8026 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:54,113 INFO L93 Difference]: Finished difference Result 10986 states and 15164 transitions. [2024-11-16 08:16:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:54,134 INFO L225 Difference]: With dead ends: 10986 [2024-11-16 08:16:54,135 INFO L226 Difference]: Without dead ends: 9607 [2024-11-16 08:16:54,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:54,140 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 360 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:54,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 511 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2024-11-16 08:16:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 7227. [2024-11-16 08:16:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7226 states have (on average 1.371990035981179) internal successors, (9914), 7226 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 9914 transitions. [2024-11-16 08:16:54,384 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 9914 transitions. Word has length 68 [2024-11-16 08:16:54,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:54,384 INFO L471 AbstractCegarLoop]: Abstraction has 7227 states and 9914 transitions. [2024-11-16 08:16:54,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 9914 transitions. [2024-11-16 08:16:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 08:16:54,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:54,387 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:54,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:16:54,387 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:54,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash -288111681, now seen corresponding path program 1 times [2024-11-16 08:16:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797413994] [2024-11-16 08:16:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:54,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:54,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797413994] [2024-11-16 08:16:54,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797413994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:54,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:54,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:54,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678822797] [2024-11-16 08:16:54,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:54,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:54,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:54,517 INFO L87 Difference]: Start difference. First operand 7227 states and 9914 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:54,665 INFO L93 Difference]: Finished difference Result 14425 states and 19798 transitions. [2024-11-16 08:16:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:54,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 08:16:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:54,679 INFO L225 Difference]: With dead ends: 14425 [2024-11-16 08:16:54,679 INFO L226 Difference]: Without dead ends: 7230 [2024-11-16 08:16:54,688 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 08:16:54,689 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:54,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 194 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2024-11-16 08:16:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7227. [2024-11-16 08:16:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7226 states have (on average 1.3548297813451426) internal successors, (9790), 7226 states have internal predecessors, (9790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 9790 transitions. [2024-11-16 08:16:54,959 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 9790 transitions. Word has length 70 [2024-11-16 08:16:54,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:54,959 INFO L471 AbstractCegarLoop]: Abstraction has 7227 states and 9790 transitions. [2024-11-16 08:16:54,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 9790 transitions. [2024-11-16 08:16:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 08:16:54,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:54,961 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:54,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:16:54,961 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:54,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash -570185985, now seen corresponding path program 1 times [2024-11-16 08:16:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:54,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752823721] [2024-11-16 08:16:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752823721] [2024-11-16 08:16:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752823721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:55,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72992745] [2024-11-16 08:16:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,060 INFO L87 Difference]: Start difference. First operand 7227 states and 9790 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:55,131 INFO L93 Difference]: Finished difference Result 9980 states and 13554 transitions. [2024-11-16 08:16:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:55,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 08:16:55,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:55,137 INFO L225 Difference]: With dead ends: 9980 [2024-11-16 08:16:55,137 INFO L226 Difference]: Without dead ends: 2785 [2024-11-16 08:16:55,144 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 08:16:55,144 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 32 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:55,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 191 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2024-11-16 08:16:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2775. [2024-11-16 08:16:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2774 states have (on average 1.3489545782263879) internal successors, (3742), 2774 states have internal predecessors, (3742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3742 transitions. [2024-11-16 08:16:55,221 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3742 transitions. Word has length 70 [2024-11-16 08:16:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,221 INFO L471 AbstractCegarLoop]: Abstraction has 2775 states and 3742 transitions. [2024-11-16 08:16:55,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3742 transitions. [2024-11-16 08:16:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:16:55,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,223 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:16:55,223 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash -659127007, now seen corresponding path program 1 times [2024-11-16 08:16:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640828507] [2024-11-16 08:16:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:55,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:55,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640828507] [2024-11-16 08:16:55,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640828507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:55,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:55,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:55,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121126957] [2024-11-16 08:16:55,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:55,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,346 INFO L87 Difference]: Start difference. First operand 2775 states and 3742 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:55,388 INFO L93 Difference]: Finished difference Result 4145 states and 5594 transitions. [2024-11-16 08:16:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:55,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-16 08:16:55,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:55,391 INFO L225 Difference]: With dead ends: 4145 [2024-11-16 08:16:55,392 INFO L226 Difference]: Without dead ends: 1414 [2024-11-16 08:16:55,394 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 08:16:55,395 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 30 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:55,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 170 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-16 08:16:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1411. [2024-11-16 08:16:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 1.327659574468085) internal successors, (1872), 1410 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1872 transitions. [2024-11-16 08:16:55,429 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1872 transitions. Word has length 72 [2024-11-16 08:16:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,429 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 1872 transitions. [2024-11-16 08:16:55,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1872 transitions. [2024-11-16 08:16:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 08:16:55,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,430 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:16:55,431 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash 85109320, now seen corresponding path program 1 times [2024-11-16 08:16:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017673446] [2024-11-16 08:16:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:55,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017673446] [2024-11-16 08:16:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017673446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:55,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:55,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115270044] [2024-11-16 08:16:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:55,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,526 INFO L87 Difference]: Start difference. First operand 1411 states and 1872 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:55,552 INFO L93 Difference]: Finished difference Result 2099 states and 2789 transitions. [2024-11-16 08:16:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 08:16:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:55,555 INFO L225 Difference]: With dead ends: 2099 [2024-11-16 08:16:55,555 INFO L226 Difference]: Without dead ends: 732 [2024-11-16 08:16:55,556 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 08:16:55,557 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:55,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 155 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-16 08:16:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 729. [2024-11-16 08:16:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.3021978021978022) internal successors, (948), 728 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 948 transitions. [2024-11-16 08:16:55,575 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 948 transitions. Word has length 74 [2024-11-16 08:16:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,575 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 948 transitions. [2024-11-16 08:16:55,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 948 transitions. [2024-11-16 08:16:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 08:16:55,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,577 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 08:16:55,577 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,577 INFO L85 PathProgramCache]: Analyzing trace with hash 512342159, now seen corresponding path program 1 times [2024-11-16 08:16:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868662117] [2024-11-16 08:16:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:56,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868662117] [2024-11-16 08:16:56,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868662117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:16:56,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475554187] [2024-11-16 08:16:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:56,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:16:56,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:56,112 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 08:16:56,116 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 08:16:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:56,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 08:16:56,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:16:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:57,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:16:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475554187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:16:59,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:16:59,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 33 [2024-11-16 08:16:59,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710139895] [2024-11-16 08:16:59,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:16:59,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 08:16:59,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 08:16:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 08:16:59,635 INFO L87 Difference]: Start difference. First operand 729 states and 948 transitions. Second operand has 33 states, 33 states have (on average 6.303030303030303) internal successors, (208), 33 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:05,023 INFO L93 Difference]: Finished difference Result 4336 states and 5705 transitions. [2024-11-16 08:17:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-16 08:17:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.303030303030303) internal successors, (208), 33 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 08:17:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:05,031 INFO L225 Difference]: With dead ends: 4336 [2024-11-16 08:17:05,032 INFO L226 Difference]: Without dead ends: 3651 [2024-11-16 08:17:05,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1533, Invalid=5949, Unknown=0, NotChecked=0, Total=7482 [2024-11-16 08:17:05,036 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 3114 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:05,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3114 Valid, 783 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 08:17:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2024-11-16 08:17:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3616. [2024-11-16 08:17:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 1.2951590594744122) internal successors, (4682), 3615 states have internal predecessors, (4682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 4682 transitions. [2024-11-16 08:17:05,145 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 4682 transitions. Word has length 76 [2024-11-16 08:17:05,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:05,145 INFO L471 AbstractCegarLoop]: Abstraction has 3616 states and 4682 transitions. [2024-11-16 08:17:05,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.303030303030303) internal successors, (208), 33 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 4682 transitions. [2024-11-16 08:17:05,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 08:17:05,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:05,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:05,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 08:17:05,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:05,354 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:05,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:05,355 INFO L85 PathProgramCache]: Analyzing trace with hash -911544305, now seen corresponding path program 1 times [2024-11-16 08:17:05,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:05,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036404959] [2024-11-16 08:17:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:05,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:05,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036404959] [2024-11-16 08:17:05,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036404959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:05,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868207467] [2024-11-16 08:17:05,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:05,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:05,870 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 08:17:05,871 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 08:17:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:05,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 08:17:05,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:06,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868207467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:07,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-16 08:17:07,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815290565] [2024-11-16 08:17:07,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:07,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 08:17:07,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:07,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 08:17:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-16 08:17:07,177 INFO L87 Difference]: Start difference. First operand 3616 states and 4682 transitions. Second operand has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:08,725 INFO L93 Difference]: Finished difference Result 13375 states and 17396 transitions. [2024-11-16 08:17:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 08:17:08,725 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 08:17:08,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:08,743 INFO L225 Difference]: With dead ends: 13375 [2024-11-16 08:17:08,744 INFO L226 Difference]: Without dead ends: 9803 [2024-11-16 08:17:08,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=672, Invalid=2298, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 08:17:08,752 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 1772 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:08,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 972 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 08:17:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2024-11-16 08:17:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 9703. [2024-11-16 08:17:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9703 states, 9702 states have (on average 1.2816944959802103) internal successors, (12435), 9702 states have internal predecessors, (12435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9703 states to 9703 states and 12435 transitions. [2024-11-16 08:17:09,025 INFO L78 Accepts]: Start accepts. Automaton has 9703 states and 12435 transitions. Word has length 76 [2024-11-16 08:17:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:09,025 INFO L471 AbstractCegarLoop]: Abstraction has 9703 states and 12435 transitions. [2024-11-16 08:17:09,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 9703 states and 12435 transitions. [2024-11-16 08:17:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 08:17:09,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:09,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:09,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:17:09,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-16 08:17:09,228 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:09,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1798274550, now seen corresponding path program 1 times [2024-11-16 08:17:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:09,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623378308] [2024-11-16 08:17:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:12,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:12,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623378308] [2024-11-16 08:17:12,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623378308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:12,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840641688] [2024-11-16 08:17:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:12,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:12,016 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 08:17:12,017 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 08:17:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:12,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-16 08:17:12,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:15,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840641688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:21,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:21,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 23] total 71 [2024-11-16 08:17:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129899435] [2024-11-16 08:17:21,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:21,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-16 08:17:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:21,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-16 08:17:21,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=4382, Unknown=0, NotChecked=0, Total=4970 [2024-11-16 08:17:21,469 INFO L87 Difference]: Start difference. First operand 9703 states and 12435 transitions. Second operand has 71 states, 71 states have (on average 3.056338028169014) internal successors, (217), 71 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)