./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.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 d852cbbb6aa933b5bfc297e03d0d3456bac2eafa50ad19971e71951b44cb15d3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 15:37:35,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 15:37:35,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 15:37:35,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 15:37:35,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 15:37:35,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 15:37:35,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 15:37:35,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 15:37:35,308 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 15:37:35,309 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 15:37:35,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 15:37:35,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 15:37:35,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 15:37:35,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 15:37:35,312 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 15:37:35,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 15:37:35,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 15:37:35,315 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 15:37:35,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 15:37:35,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 15:37:35,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 15:37:35,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 15:37:35,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 15:37:35,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 15:37:35,318 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 15:37:35,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 15:37:35,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 15:37:35,319 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 15:37:35,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 15:37:35,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 15:37:35,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 15:37:35,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 15:37:35,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:37:35,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 15:37:35,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 15:37:35,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 15:37:35,321 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 15:37:35,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 15:37:35,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 15:37:35,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 15:37:35,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 15:37:35,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 15:37:35,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d852cbbb6aa933b5bfc297e03d0d3456bac2eafa50ad19971e71951b44cb15d3 [2024-11-08 15:37:35,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 15:37:35,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 15:37:35,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 15:37:35,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 15:37:35,610 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 15:37:35,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2024-11-08 15:37:36,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 15:37:37,146 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 15:37:37,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2024-11-08 15:37:37,156 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5dafde2a/6e45787be77e42c484d6af6dd16b0544/FLAGe4f751b2b [2024-11-08 15:37:37,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5dafde2a/6e45787be77e42c484d6af6dd16b0544 [2024-11-08 15:37:37,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 15:37:37,178 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 15:37:37,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 15:37:37,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 15:37:37,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 15:37:37,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e1fdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37, skipping insertion in model container [2024-11-08 15:37:37,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 15:37:37,445 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.3.1.ufo.BOUNDED-6.pals.c[5984,5997] [2024-11-08 15:37:37,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:37:37,458 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 15:37:37,489 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.3.1.ufo.BOUNDED-6.pals.c[5984,5997] [2024-11-08 15:37:37,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:37:37,509 INFO L204 MainTranslator]: Completed translation [2024-11-08 15:37:37,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37 WrapperNode [2024-11-08 15:37:37,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 15:37:37,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 15:37:37,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 15:37:37,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 15:37:37,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,553 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 223 [2024-11-08 15:37:37,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 15:37:37,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 15:37:37,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 15:37:37,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 15:37:37,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,585 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 15:37:37,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 15:37:37,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 15:37:37,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 15:37:37,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 15:37:37,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (1/1) ... [2024-11-08 15:37:37,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:37:37,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:37:37,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 15:37:37,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 15:37:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 15:37:37,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 15:37:37,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 15:37:37,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 15:37:37,770 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 15:37:37,772 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 15:37:38,087 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-08 15:37:38,087 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 15:37:38,102 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 15:37:38,102 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 15:37:38,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:37:38 BoogieIcfgContainer [2024-11-08 15:37:38,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 15:37:38,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 15:37:38,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 15:37:38,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 15:37:38,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 03:37:37" (1/3) ... [2024-11-08 15:37:38,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28677d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:37:38, skipping insertion in model container [2024-11-08 15:37:38,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:37:37" (2/3) ... [2024-11-08 15:37:38,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28677d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:37:38, skipping insertion in model container [2024-11-08 15:37:38,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:37:38" (3/3) ... [2024-11-08 15:37:38,113 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2024-11-08 15:37:38,125 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 15:37:38,125 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 15:37:38,175 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 15:37:38,181 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;@7d82beb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 15:37:38,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 15:37:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 15:37:38,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:38,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:37:38,196 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:38,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:38,203 INFO L85 PathProgramCache]: Analyzing trace with hash 904518825, now seen corresponding path program 1 times [2024-11-08 15:37:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581871695] [2024-11-08 15:37:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:38,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581871695] [2024-11-08 15:37:38,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581871695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:38,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:38,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 15:37:38,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870226280] [2024-11-08 15:37:38,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:38,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 15:37:38,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 15:37:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 15:37:38,497 INFO L87 Difference]: Start difference. First operand has 56 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 55 states have internal predecessors, (92), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:38,519 INFO L93 Difference]: Finished difference Result 91 states and 146 transitions. [2024-11-08 15:37:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 15:37:38,521 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2024-11-08 15:37:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:38,529 INFO L225 Difference]: With dead ends: 91 [2024-11-08 15:37:38,530 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 15:37:38,532 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 [2024-11-08 15:37:38,537 INFO L432 NwaCegarLoop]: 89 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, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:38,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:38,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 15:37:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-08 15:37:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 51 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 85 transitions. [2024-11-08 15:37:38,574 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 85 transitions. Word has length 19 [2024-11-08 15:37:38,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:38,574 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 85 transitions. [2024-11-08 15:37:38,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 85 transitions. [2024-11-08 15:37:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 15:37:38,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:38,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:37:38,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 15:37:38,579 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:38,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash -106598425, now seen corresponding path program 1 times [2024-11-08 15:37:38,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:38,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954555746] [2024-11-08 15:37:38,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:38,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954555746] [2024-11-08 15:37:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954555746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:38,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:38,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:37:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687911879] [2024-11-08 15:37:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:38,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:37:38,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:37:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:37:38,794 INFO L87 Difference]: Start difference. First operand 52 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:38,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:38,867 INFO L93 Difference]: Finished difference Result 116 states and 183 transitions. [2024-11-08 15:37:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:37:38,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2024-11-08 15:37:38,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:38,869 INFO L225 Difference]: With dead ends: 116 [2024-11-08 15:37:38,869 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 15:37:38,869 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 [2024-11-08 15:37:38,870 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 46 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:38,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 302 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:37:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 15:37:38,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 52. [2024-11-08 15:37:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2024-11-08 15:37:38,881 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 19 [2024-11-08 15:37:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:38,881 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2024-11-08 15:37:38,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2024-11-08 15:37:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 15:37:38,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:38,883 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] [2024-11-08 15:37:38,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 15:37:38,884 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:38,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1681437636, now seen corresponding path program 1 times [2024-11-08 15:37:38,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:38,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079448754] [2024-11-08 15:37:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:38,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:39,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:39,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079448754] [2024-11-08 15:37:39,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079448754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:39,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:39,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:37:39,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413622943] [2024-11-08 15:37:39,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:39,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:37:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:37:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:37:39,077 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:39,240 INFO L93 Difference]: Finished difference Result 232 states and 351 transitions. [2024-11-08 15:37:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:37:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2024-11-08 15:37:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:39,243 INFO L225 Difference]: With dead ends: 232 [2024-11-08 15:37:39,244 INFO L226 Difference]: Without dead ends: 202 [2024-11-08 15:37:39,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:37:39,247 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 272 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:39,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 426 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:37:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-08 15:37:39,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 80. [2024-11-08 15:37:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 79 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2024-11-08 15:37:39,264 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 34 [2024-11-08 15:37:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:39,265 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2024-11-08 15:37:39,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2024-11-08 15:37:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 15:37:39,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:39,267 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] [2024-11-08 15:37:39,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 15:37:39,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:39,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash -461836524, now seen corresponding path program 1 times [2024-11-08 15:37:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370743807] [2024-11-08 15:37:39,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:39,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:39,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370743807] [2024-11-08 15:37:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370743807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:39,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:39,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207124055] [2024-11-08 15:37:39,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:39,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:39,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:39,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:39,423 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:39,445 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2024-11-08 15:37:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2024-11-08 15:37:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:39,447 INFO L225 Difference]: With dead ends: 185 [2024-11-08 15:37:39,447 INFO L226 Difference]: Without dead ends: 127 [2024-11-08 15:37:39,448 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 [2024-11-08 15:37:39,449 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 27 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 109 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 [2024-11-08 15:37:39,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 109 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-08 15:37:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-08 15:37:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 124 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2024-11-08 15:37:39,461 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 36 [2024-11-08 15:37:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:39,462 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2024-11-08 15:37:39,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,462 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2024-11-08 15:37:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 15:37:39,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:39,466 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] [2024-11-08 15:37:39,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 15:37:39,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:39,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash -395343012, now seen corresponding path program 1 times [2024-11-08 15:37:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:39,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542403828] [2024-11-08 15:37:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:39,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:39,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:39,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542403828] [2024-11-08 15:37:39,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542403828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:39,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:37:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009189416] [2024-11-08 15:37:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:39,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:37:39,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:37:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:37:39,700 INFO L87 Difference]: Start difference. First operand 125 states and 181 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:39,775 INFO L93 Difference]: Finished difference Result 230 states and 341 transitions. [2024-11-08 15:37:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:37:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2024-11-08 15:37:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:39,776 INFO L225 Difference]: With dead ends: 230 [2024-11-08 15:37:39,778 INFO L226 Difference]: Without dead ends: 127 [2024-11-08 15:37:39,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 15:37:39,779 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 100 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:39,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 150 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-08 15:37:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-08 15:37:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4435483870967742) internal successors, (179), 124 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2024-11-08 15:37:39,800 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 179 transitions. Word has length 36 [2024-11-08 15:37:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:39,800 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 179 transitions. [2024-11-08 15:37:39,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 179 transitions. [2024-11-08 15:37:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 15:37:39,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:39,802 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] [2024-11-08 15:37:39,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 15:37:39,802 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:39,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 214545292, now seen corresponding path program 1 times [2024-11-08 15:37:39,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93440600] [2024-11-08 15:37:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:39,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:40,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:40,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93440600] [2024-11-08 15:37:40,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93440600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:40,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:40,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 15:37:40,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306359888] [2024-11-08 15:37:40,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:40,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 15:37:40,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 15:37:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:37:40,054 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:40,106 INFO L93 Difference]: Finished difference Result 133 states and 188 transitions. [2024-11-08 15:37:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 15:37:40,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 37 [2024-11-08 15:37:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:40,108 INFO L225 Difference]: With dead ends: 133 [2024-11-08 15:37:40,110 INFO L226 Difference]: Without dead ends: 131 [2024-11-08 15:37:40,111 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 [2024-11-08 15:37:40,112 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 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 [2024-11-08 15:37:40,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-08 15:37:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-08 15:37:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4153846153846155) internal successors, (184), 130 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 184 transitions. [2024-11-08 15:37:40,124 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 184 transitions. Word has length 37 [2024-11-08 15:37:40,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:40,125 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 184 transitions. [2024-11-08 15:37:40,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 184 transitions. [2024-11-08 15:37:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 15:37:40,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:40,127 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] [2024-11-08 15:37:40,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 15:37:40,127 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:40,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -63465668, now seen corresponding path program 1 times [2024-11-08 15:37:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:40,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48274783] [2024-11-08 15:37:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:40,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:40,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48274783] [2024-11-08 15:37:40,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48274783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:40,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:40,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:40,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876774142] [2024-11-08 15:37:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:40,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:40,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:40,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:40,195 INFO L87 Difference]: Start difference. First operand 131 states and 184 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:40,211 INFO L93 Difference]: Finished difference Result 253 states and 365 transitions. [2024-11-08 15:37:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:40,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-11-08 15:37:40,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:40,213 INFO L225 Difference]: With dead ends: 253 [2024-11-08 15:37:40,213 INFO L226 Difference]: Without dead ends: 189 [2024-11-08 15:37:40,214 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 [2024-11-08 15:37:40,214 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 37 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 149 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 [2024-11-08 15:37:40,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-08 15:37:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2024-11-08 15:37:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.424731182795699) internal successors, (265), 186 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 265 transitions. [2024-11-08 15:37:40,234 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 265 transitions. Word has length 38 [2024-11-08 15:37:40,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:40,234 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 265 transitions. [2024-11-08 15:37:40,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,234 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 265 transitions. [2024-11-08 15:37:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 15:37:40,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:40,235 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] [2024-11-08 15:37:40,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 15:37:40,235 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:40,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash 2016032828, now seen corresponding path program 1 times [2024-11-08 15:37:40,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:40,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303807365] [2024-11-08 15:37:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:40,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:40,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303807365] [2024-11-08 15:37:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303807365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:40,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:40,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457800806] [2024-11-08 15:37:40,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:40,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:40,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:40,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:40,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:40,297 INFO L87 Difference]: Start difference. First operand 187 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:40,314 INFO L93 Difference]: Finished difference Result 489 states and 705 transitions. [2024-11-08 15:37:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:40,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-11-08 15:37:40,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:40,316 INFO L225 Difference]: With dead ends: 489 [2024-11-08 15:37:40,316 INFO L226 Difference]: Without dead ends: 326 [2024-11-08 15:37:40,317 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 [2024-11-08 15:37:40,322 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 35 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 155 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 [2024-11-08 15:37:40,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-08 15:37:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2024-11-08 15:37:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.414860681114551) internal successors, (457), 323 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 457 transitions. [2024-11-08 15:37:40,346 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 457 transitions. Word has length 38 [2024-11-08 15:37:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:40,348 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 457 transitions. [2024-11-08 15:37:40,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 457 transitions. [2024-11-08 15:37:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 15:37:40,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:40,350 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] [2024-11-08 15:37:40,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 15:37:40,350 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:40,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:40,354 INFO L85 PathProgramCache]: Analyzing trace with hash -498001604, now seen corresponding path program 1 times [2024-11-08 15:37:40,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:40,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546040207] [2024-11-08 15:37:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:40,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:40,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:40,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546040207] [2024-11-08 15:37:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546040207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:40,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:40,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:40,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089937936] [2024-11-08 15:37:40,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:40,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:40,407 INFO L87 Difference]: Start difference. First operand 324 states and 457 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:40,437 INFO L93 Difference]: Finished difference Result 876 states and 1239 transitions. [2024-11-08 15:37:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-11-08 15:37:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:40,440 INFO L225 Difference]: With dead ends: 876 [2024-11-08 15:37:40,442 INFO L226 Difference]: Without dead ends: 576 [2024-11-08 15:37:40,443 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 [2024-11-08 15:37:40,447 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 157 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 [2024-11-08 15:37:40,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-08 15:37:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2024-11-08 15:37:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.3839441535776615) internal successors, (793), 573 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 793 transitions. [2024-11-08 15:37:40,471 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 793 transitions. Word has length 38 [2024-11-08 15:37:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:40,471 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 793 transitions. [2024-11-08 15:37:40,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 793 transitions. [2024-11-08 15:37:40,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 15:37:40,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:40,473 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] [2024-11-08 15:37:40,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 15:37:40,474 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:40,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash 201693929, now seen corresponding path program 1 times [2024-11-08 15:37:40,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544299629] [2024-11-08 15:37:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:37:40,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:40,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544299629] [2024-11-08 15:37:40,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544299629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:40,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:40,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:37:40,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680097840] [2024-11-08 15:37:40,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:40,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:37:40,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:37:40,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:37:40,600 INFO L87 Difference]: Start difference. First operand 574 states and 793 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:40,701 INFO L93 Difference]: Finished difference Result 2206 states and 3069 transitions. [2024-11-08 15:37:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:37:40,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 53 [2024-11-08 15:37:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:40,707 INFO L225 Difference]: With dead ends: 2206 [2024-11-08 15:37:40,708 INFO L226 Difference]: Without dead ends: 1804 [2024-11-08 15:37:40,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:37:40,709 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 159 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:40,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 294 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2024-11-08 15:37:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1050. [2024-11-08 15:37:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 1.3813155386081983) internal successors, (1449), 1049 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1449 transitions. [2024-11-08 15:37:40,748 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1449 transitions. Word has length 53 [2024-11-08 15:37:40,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:40,749 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1449 transitions. [2024-11-08 15:37:40,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1449 transitions. [2024-11-08 15:37:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 15:37:40,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:40,751 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] [2024-11-08 15:37:40,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 15:37:40,751 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:40,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:40,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2013774871, now seen corresponding path program 1 times [2024-11-08 15:37:40,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:40,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773475711] [2024-11-08 15:37:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:40,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:37:40,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773475711] [2024-11-08 15:37:40,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773475711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:40,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:40,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:37:40,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936094480] [2024-11-08 15:37:40,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:40,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:37:40,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:37:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:37:40,848 INFO L87 Difference]: Start difference. First operand 1050 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:40,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:40,946 INFO L93 Difference]: Finished difference Result 2754 states and 3829 transitions. [2024-11-08 15:37:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:37:40,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 53 [2024-11-08 15:37:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:40,954 INFO L225 Difference]: With dead ends: 2754 [2024-11-08 15:37:40,955 INFO L226 Difference]: Without dead ends: 2204 [2024-11-08 15:37:40,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:37:40,957 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 163 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:40,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 269 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:40,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2024-11-08 15:37:41,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1798. [2024-11-08 15:37:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 1.3784084585420144) internal successors, (2477), 1797 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2477 transitions. [2024-11-08 15:37:41,033 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2477 transitions. Word has length 53 [2024-11-08 15:37:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:41,033 INFO L471 AbstractCegarLoop]: Abstraction has 1798 states and 2477 transitions. [2024-11-08 15:37:41,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2477 transitions. [2024-11-08 15:37:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 15:37:41,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:41,035 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] [2024-11-08 15:37:41,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 15:37:41,035 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:41,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash -232842007, now seen corresponding path program 1 times [2024-11-08 15:37:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:41,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374055623] [2024-11-08 15:37:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:37:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374055623] [2024-11-08 15:37:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374055623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:41,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:41,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:37:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769397555] [2024-11-08 15:37:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:41,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:37:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:41,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:37:41,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:37:41,149 INFO L87 Difference]: Start difference. First operand 1798 states and 2477 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-08 15:37:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:41,256 INFO L93 Difference]: Finished difference Result 3302 states and 4585 transitions. [2024-11-08 15:37:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:37:41,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 53 [2024-11-08 15:37:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:41,266 INFO L225 Difference]: With dead ends: 3302 [2024-11-08 15:37:41,267 INFO L226 Difference]: Without dead ends: 2752 [2024-11-08 15:37:41,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:37:41,270 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 169 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:41,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 275 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2024-11-08 15:37:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2346. [2024-11-08 15:37:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.378678038379531) internal successors, (3233), 2345 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3233 transitions. [2024-11-08 15:37:41,372 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3233 transitions. Word has length 53 [2024-11-08 15:37:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:41,373 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3233 transitions. [2024-11-08 15:37:41,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-08 15:37:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3233 transitions. [2024-11-08 15:37:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 15:37:41,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:41,374 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] [2024-11-08 15:37:41,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 15:37:41,375 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:41,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1948699024, now seen corresponding path program 1 times [2024-11-08 15:37:41,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:41,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141417769] [2024-11-08 15:37:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:41,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141417769] [2024-11-08 15:37:41,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141417769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:41,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:41,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:41,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769192699] [2024-11-08 15:37:41,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:41,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:41,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:41,467 INFO L87 Difference]: Start difference. First operand 2346 states and 3233 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:41,520 INFO L93 Difference]: Finished difference Result 4670 states and 6443 transitions. [2024-11-08 15:37:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:41,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2024-11-08 15:37:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:41,530 INFO L225 Difference]: With dead ends: 4670 [2024-11-08 15:37:41,530 INFO L226 Difference]: Without dead ends: 2348 [2024-11-08 15:37:41,535 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 [2024-11-08 15:37:41,536 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 144 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 [2024-11-08 15:37:41,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 144 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2024-11-08 15:37:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2024-11-08 15:37:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.3573560767590618) internal successors, (3183), 2345 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3183 transitions. [2024-11-08 15:37:41,606 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3183 transitions. Word has length 54 [2024-11-08 15:37:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:41,607 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3183 transitions. [2024-11-08 15:37:41,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3183 transitions. [2024-11-08 15:37:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 15:37:41,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:41,609 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] [2024-11-08 15:37:41,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 15:37:41,609 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:41,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:41,610 INFO L85 PathProgramCache]: Analyzing trace with hash 443391553, now seen corresponding path program 1 times [2024-11-08 15:37:41,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:41,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024394860] [2024-11-08 15:37:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:41,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:41,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024394860] [2024-11-08 15:37:41,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024394860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:41,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537430113] [2024-11-08 15:37:41,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:41,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:41,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:41,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:41,710 INFO L87 Difference]: Start difference. First operand 2346 states and 3183 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:41,749 INFO L93 Difference]: Finished difference Result 3265 states and 4443 transitions. [2024-11-08 15:37:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:41,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2024-11-08 15:37:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:41,753 INFO L225 Difference]: With dead ends: 3265 [2024-11-08 15:37:41,754 INFO L226 Difference]: Without dead ends: 943 [2024-11-08 15:37:41,756 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 [2024-11-08 15:37:41,757 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 141 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 [2024-11-08 15:37:41,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 141 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-08 15:37:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 935. [2024-11-08 15:37:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.3468950749464668) internal successors, (1258), 934 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1258 transitions. [2024-11-08 15:37:41,791 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1258 transitions. Word has length 55 [2024-11-08 15:37:41,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:41,791 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1258 transitions. [2024-11-08 15:37:41,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1258 transitions. [2024-11-08 15:37:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 15:37:41,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:41,792 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] [2024-11-08 15:37:41,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 15:37:41,793 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:41,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1656493662, now seen corresponding path program 1 times [2024-11-08 15:37:41,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:41,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571542035] [2024-11-08 15:37:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:41,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:41,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:41,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571542035] [2024-11-08 15:37:41,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571542035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:37:41,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:37:41,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:37:41,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966202668] [2024-11-08 15:37:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:37:41,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:37:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:37:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:37:41,871 INFO L87 Difference]: Start difference. First operand 935 states and 1258 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:41,893 INFO L93 Difference]: Finished difference Result 1389 states and 1872 transitions. [2024-11-08 15:37:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:37:41,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-11-08 15:37:41,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:41,896 INFO L225 Difference]: With dead ends: 1389 [2024-11-08 15:37:41,896 INFO L226 Difference]: Without dead ends: 487 [2024-11-08 15:37:41,897 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 [2024-11-08 15:37:41,899 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 25 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 120 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 [2024-11-08 15:37:41,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 120 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:37:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-08 15:37:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2024-11-08 15:37:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.3161157024793388) internal successors, (637), 484 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 637 transitions. [2024-11-08 15:37:41,916 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 637 transitions. Word has length 56 [2024-11-08 15:37:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 637 transitions. [2024-11-08 15:37:41,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 637 transitions. [2024-11-08 15:37:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 15:37:41,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:41,918 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:37:41,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 15:37:41,918 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:41,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2139764684, now seen corresponding path program 1 times [2024-11-08 15:37:41,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:41,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707675838] [2024-11-08 15:37:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:41,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:42,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:42,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707675838] [2024-11-08 15:37:42,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707675838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:37:42,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043307979] [2024-11-08 15:37:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:42,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:37:42,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:37:42,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:37:42,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 15:37:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:42,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 15:37:42,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:37:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:37:42,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:37:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:37:42,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043307979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:37:42,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:37:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-08 15:37:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516486505] [2024-11-08 15:37:42,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:37:42,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 15:37:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:42,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 15:37:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-08 15:37:42,979 INFO L87 Difference]: Start difference. First operand 485 states and 637 transitions. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:44,015 INFO L93 Difference]: Finished difference Result 2493 states and 3258 transitions. [2024-11-08 15:37:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 15:37:44,016 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 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 58 [2024-11-08 15:37:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:44,022 INFO L225 Difference]: With dead ends: 2493 [2024-11-08 15:37:44,022 INFO L226 Difference]: Without dead ends: 2041 [2024-11-08 15:37:44,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 15:37:44,024 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 1107 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:44,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 490 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 15:37:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2024-11-08 15:37:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1923. [2024-11-08 15:37:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.2580645161290323) internal successors, (2418), 1922 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2418 transitions. [2024-11-08 15:37:44,114 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2418 transitions. Word has length 58 [2024-11-08 15:37:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:44,114 INFO L471 AbstractCegarLoop]: Abstraction has 1923 states and 2418 transitions. [2024-11-08 15:37:44,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2418 transitions. [2024-11-08 15:37:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 15:37:44,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:44,116 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] [2024-11-08 15:37:44,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 15:37:44,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 15:37:44,321 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:44,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1889442531, now seen corresponding path program 1 times [2024-11-08 15:37:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:44,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44122138] [2024-11-08 15:37:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:44,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:45,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:45,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44122138] [2024-11-08 15:37:45,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44122138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:37:45,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975337377] [2024-11-08 15:37:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:45,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:37:45,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:37:45,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:37:45,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 15:37:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:45,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 15:37:45,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:37:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:45,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:37:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975337377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:37:46,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:37:46,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-08 15:37:46,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453439251] [2024-11-08 15:37:46,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:37:46,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 15:37:46,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 15:37:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-11-08 15:37:46,635 INFO L87 Difference]: Start difference. First operand 1923 states and 2418 transitions. Second operand has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:47,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:47,230 INFO L93 Difference]: Finished difference Result 5260 states and 6658 transitions. [2024-11-08 15:37:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 15:37:47,231 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 25 states have internal predecessors, (154), 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 59 [2024-11-08 15:37:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:47,243 INFO L225 Difference]: With dead ends: 5260 [2024-11-08 15:37:47,243 INFO L226 Difference]: Without dead ends: 3773 [2024-11-08 15:37:47,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=1095, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 15:37:47,247 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 788 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:47,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 416 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 15:37:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2024-11-08 15:37:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3707. [2024-11-08 15:37:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 3706 states have (on average 1.2393416082029143) internal successors, (4593), 3706 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 4593 transitions. [2024-11-08 15:37:47,389 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 4593 transitions. Word has length 59 [2024-11-08 15:37:47,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:47,389 INFO L471 AbstractCegarLoop]: Abstraction has 3707 states and 4593 transitions. [2024-11-08 15:37:47,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 4593 transitions. [2024-11-08 15:37:47,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 15:37:47,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:47,390 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:37:47,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 15:37:47,591 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,SelfDestructingSolverStorable16 [2024-11-08 15:37:47,591 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:47,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash -910303857, now seen corresponding path program 1 times [2024-11-08 15:37:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:47,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712763551] [2024-11-08 15:37:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:47,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712763551] [2024-11-08 15:37:47,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712763551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:37:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606583735] [2024-11-08 15:37:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:47,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:37:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:37:47,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:37:47,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 15:37:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:48,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 15:37:48,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:37:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:48,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:37:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:50,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606583735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:37:50,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:37:50,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-11-08 15:37:50,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238409467] [2024-11-08 15:37:50,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:37:50,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 15:37:50,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:50,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 15:37:50,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-11-08 15:37:50,006 INFO L87 Difference]: Start difference. First operand 3707 states and 4593 transitions. Second operand has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:51,496 INFO L93 Difference]: Finished difference Result 7665 states and 9533 transitions. [2024-11-08 15:37:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 15:37:51,497 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 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 59 [2024-11-08 15:37:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:51,516 INFO L225 Difference]: With dead ends: 7665 [2024-11-08 15:37:51,516 INFO L226 Difference]: Without dead ends: 4333 [2024-11-08 15:37:51,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=611, Invalid=2359, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 15:37:51,524 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 1796 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:51,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 737 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 15:37:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2024-11-08 15:37:51,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4323. [2024-11-08 15:37:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4322 states have (on average 1.2232762609902823) internal successors, (5287), 4322 states have internal predecessors, (5287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 5287 transitions. [2024-11-08 15:37:51,706 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 5287 transitions. Word has length 59 [2024-11-08 15:37:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:51,706 INFO L471 AbstractCegarLoop]: Abstraction has 4323 states and 5287 transitions. [2024-11-08 15:37:51,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.866666666666666) internal successors, (146), 30 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:37:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 5287 transitions. [2024-11-08 15:37:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 15:37:51,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:51,708 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 15:37:51,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 15:37:51,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 15:37:51,909 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:51,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1612137706, now seen corresponding path program 1 times [2024-11-08 15:37:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907279430] [2024-11-08 15:37:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:53,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:53,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907279430] [2024-11-08 15:37:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907279430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:37:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913865151] [2024-11-08 15:37:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:53,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:37:53,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:37:53,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:37:53,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 15:37:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:53,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 15:37:53,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:37:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:55,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:37:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:57,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913865151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:37:57,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:37:57,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2024-11-08 15:37:57,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471221668] [2024-11-08 15:37:57,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:37:57,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 15:37:57,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:57,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 15:37:57,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2466, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 15:37:57,436 INFO L87 Difference]: Start difference. First operand 4323 states and 5287 transitions. Second operand has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:38:07,941 INFO L93 Difference]: Finished difference Result 13299 states and 16452 transitions. [2024-11-08 15:38:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-08 15:38:07,942 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 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 60 [2024-11-08 15:38:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:38:07,969 INFO L225 Difference]: With dead ends: 13299 [2024-11-08 15:38:07,969 INFO L226 Difference]: Without dead ends: 10260 [2024-11-08 15:38:07,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5108 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2649, Invalid=14121, Unknown=0, NotChecked=0, Total=16770 [2024-11-08 15:38:07,978 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 1845 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:38:07,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 1297 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 15:38:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10260 states. [2024-11-08 15:38:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10260 to 4742. [2024-11-08 15:38:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4741 states have (on average 1.2290655979751108) internal successors, (5827), 4741 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 5827 transitions. [2024-11-08 15:38:08,234 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 5827 transitions. Word has length 60 [2024-11-08 15:38:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:38:08,234 INFO L471 AbstractCegarLoop]: Abstraction has 4742 states and 5827 transitions. [2024-11-08 15:38:08,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 5827 transitions. [2024-11-08 15:38:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 15:38:08,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:38:08,235 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] [2024-11-08 15:38:08,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 15:38:08,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:08,440 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:38:08,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:38:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash -494193176, now seen corresponding path program 1 times [2024-11-08 15:38:08,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:38:08,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25618504] [2024-11-08 15:38:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:08,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:38:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:09,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:38:09,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25618504] [2024-11-08 15:38:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25618504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:38:09,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473372266] [2024-11-08 15:38:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:09,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:09,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:38:09,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:38:09,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 15:38:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:09,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 15:38:09,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:38:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:10,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:38:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473372266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:38:12,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:38:12,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 19] total 46 [2024-11-08 15:38:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223326419] [2024-11-08 15:38:12,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:38:12,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-08 15:38:12,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:38:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-08 15:38:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1834, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 15:38:12,299 INFO L87 Difference]: Start difference. First operand 4742 states and 5827 transitions. Second operand has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:38:16,025 INFO L93 Difference]: Finished difference Result 15908 states and 19756 transitions. [2024-11-08 15:38:16,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-08 15:38:16,025 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 states have internal predecessors, (151), 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 62 [2024-11-08 15:38:16,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:38:16,048 INFO L225 Difference]: With dead ends: 15908 [2024-11-08 15:38:16,049 INFO L226 Difference]: Without dead ends: 13644 [2024-11-08 15:38:16,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1235, Invalid=5571, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 15:38:16,057 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 1582 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:38:16,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 1283 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 15:38:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13644 states. [2024-11-08 15:38:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13644 to 4478. [2024-11-08 15:38:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 1.2307348670985034) internal successors, (5510), 4477 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 5510 transitions. [2024-11-08 15:38:16,402 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 5510 transitions. Word has length 62 [2024-11-08 15:38:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:38:16,403 INFO L471 AbstractCegarLoop]: Abstraction has 4478 states and 5510 transitions. [2024-11-08 15:38:16,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.282608695652174) internal successors, (151), 46 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 5510 transitions. [2024-11-08 15:38:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 15:38:16,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:38:16,405 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 15:38:16,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 15:38:16,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:16,610 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:38:16,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:38:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash -942142498, now seen corresponding path program 1 times [2024-11-08 15:38:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:38:16,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12954380] [2024-11-08 15:38:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:38:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 39 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:17,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:38:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12954380] [2024-11-08 15:38:17,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12954380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:38:17,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248417713] [2024-11-08 15:38:17,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:17,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:17,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:38:17,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:38:17,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 15:38:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:17,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 15:38:17,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:38:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 43 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:17,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:38:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 39 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248417713] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:38:19,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:38:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 15:38:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455918164] [2024-11-08 15:38:19,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:38:19,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 15:38:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:38:19,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 15:38:19,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-11-08 15:38:19,268 INFO L87 Difference]: Start difference. First operand 4478 states and 5510 transitions. Second operand has 27 states, 27 states have (on average 7.592592592592593) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:38:19,835 INFO L93 Difference]: Finished difference Result 6910 states and 8516 transitions. [2024-11-08 15:38:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 15:38:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.592592592592593) internal successors, (205), 26 states have internal predecessors, (205), 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 98 [2024-11-08 15:38:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:38:19,843 INFO L225 Difference]: With dead ends: 6910 [2024-11-08 15:38:19,843 INFO L226 Difference]: Without dead ends: 3756 [2024-11-08 15:38:19,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=1289, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 15:38:19,848 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 444 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:38:19,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 545 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:38:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2024-11-08 15:38:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 3748. [2024-11-08 15:38:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3748 states, 3747 states have (on average 1.2124366159594342) internal successors, (4543), 3747 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 4543 transitions. [2024-11-08 15:38:20,027 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 4543 transitions. Word has length 98 [2024-11-08 15:38:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:38:20,027 INFO L471 AbstractCegarLoop]: Abstraction has 3748 states and 4543 transitions. [2024-11-08 15:38:20,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.592592592592593) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:20,028 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 4543 transitions. [2024-11-08 15:38:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 15:38:20,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:38:20,034 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 15:38:20,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 15:38:20,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:20,235 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:38:20,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:38:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1444110768, now seen corresponding path program 1 times [2024-11-08 15:38:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:38:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264868428] [2024-11-08 15:38:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:38:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:38:20,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264868428] [2024-11-08 15:38:20,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264868428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:38:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047271176] [2024-11-08 15:38:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:20,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:38:20,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:38:20,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 15:38:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:20,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 15:38:20,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:38:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:21,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:38:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:22,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047271176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:38:22,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:38:22,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-08 15:38:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746338695] [2024-11-08 15:38:22,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:38:22,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 15:38:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:38:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 15:38:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2024-11-08 15:38:22,649 INFO L87 Difference]: Start difference. First operand 3748 states and 4543 transitions. Second operand has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 28 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:38:23,257 INFO L93 Difference]: Finished difference Result 5403 states and 6588 transitions. [2024-11-08 15:38:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 15:38:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 28 states have internal predecessors, (242), 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 98 [2024-11-08 15:38:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:38:23,264 INFO L225 Difference]: With dead ends: 5403 [2024-11-08 15:38:23,264 INFO L226 Difference]: Without dead ends: 3856 [2024-11-08 15:38:23,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=424, Invalid=1468, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 15:38:23,268 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 540 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 15:38:23,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 554 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 15:38:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2024-11-08 15:38:23,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 2066. [2024-11-08 15:38:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 2065 states have (on average 1.2062953995157386) internal successors, (2491), 2065 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:23,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2491 transitions. [2024-11-08 15:38:23,419 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2491 transitions. Word has length 98 [2024-11-08 15:38:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:38:23,419 INFO L471 AbstractCegarLoop]: Abstraction has 2066 states and 2491 transitions. [2024-11-08 15:38:23,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 28 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:23,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2491 transitions. [2024-11-08 15:38:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 15:38:23,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:38:23,421 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 15:38:23,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 15:38:23,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:23,625 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:38:23,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:38:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1708375633, now seen corresponding path program 1 times [2024-11-08 15:38:23,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:38:23,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582884723] [2024-11-08 15:38:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:23,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:38:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:24,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:38:24,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582884723] [2024-11-08 15:38:24,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582884723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:38:24,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345484723] [2024-11-08 15:38:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:24,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:38:24,841 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:38:24,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 15:38:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:24,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 15:38:24,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:38:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:26,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:38:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:30,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345484723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:38:30,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:38:30,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 64 [2024-11-08 15:38:30,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395867765] [2024-11-08 15:38:30,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:38:30,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-08 15:38:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:38:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-08 15:38:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=3625, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 15:38:30,031 INFO L87 Difference]: Start difference. First operand 2066 states and 2491 transitions. Second operand has 64 states, 64 states have (on average 4.40625) internal successors, (282), 64 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:38:37,803 INFO L93 Difference]: Finished difference Result 5146 states and 6174 transitions. [2024-11-08 15:38:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-08 15:38:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.40625) internal successors, (282), 64 states have internal predecessors, (282), 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 99 [2024-11-08 15:38:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:38:37,810 INFO L225 Difference]: With dead ends: 5146 [2024-11-08 15:38:37,810 INFO L226 Difference]: Without dead ends: 3773 [2024-11-08 15:38:37,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4168 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2319, Invalid=13181, Unknown=0, NotChecked=0, Total=15500 [2024-11-08 15:38:37,817 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 1300 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:38:37,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1517 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 15:38:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2024-11-08 15:38:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3138. [2024-11-08 15:38:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 1.1919030921262352) internal successors, (3739), 3137 states have internal predecessors, (3739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 3739 transitions. [2024-11-08 15:38:38,066 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 3739 transitions. Word has length 99 [2024-11-08 15:38:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:38:38,066 INFO L471 AbstractCegarLoop]: Abstraction has 3138 states and 3739 transitions. [2024-11-08 15:38:38,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.40625) internal successors, (282), 64 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:38:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 3739 transitions. [2024-11-08 15:38:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 15:38:38,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:38:38,068 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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] [2024-11-08 15:38:38,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 15:38:38,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 15:38:38,269 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:38:38,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:38:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash -94504528, now seen corresponding path program 1 times [2024-11-08 15:38:38,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:38:38,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680532354] [2024-11-08 15:38:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:38,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:38:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:38:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680532354] [2024-11-08 15:38:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680532354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:38:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778472208] [2024-11-08 15:38:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:38:39,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:38:39,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:38:39,968 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 15:38:39,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 15:38:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:38:40,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 15:38:40,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:38:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:41,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:38:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:38:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778472208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:38:43,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:38:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 18] total 59 [2024-11-08 15:38:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998421695] [2024-11-08 15:38:43,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:38:43,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 15:38:43,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:38:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 15:38:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=3207, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 15:38:43,734 INFO L87 Difference]: Start difference. First operand 3138 states and 3739 transitions. Second operand has 59 states, 59 states have (on average 4.813559322033898) internal successors, (284), 59 states have internal predecessors, (284), 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)