./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem17_label08.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 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:50:30,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:50:31,061 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:50:31,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:50:31,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:50:31,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:50:31,105 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:50:31,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:50:31,106 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:50:31,106 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:50:31,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:50:31,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:50:31,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:50:31,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:50:31,108 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:50:31,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:50:31,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:50:31,110 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:50:31,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:50:31,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:50:31,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:50:31,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:50:31,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:50:31,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:50:31,115 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:50:31,116 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:50:31,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:50:31,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:50:31,116 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:50:31,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:50:31,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:50:31,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:50:31,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:50:31,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:50:31,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:50:31,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:50:31,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:50:31,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:50:31,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:50:31,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:50:31,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:50:31,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:50:31,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc [2024-11-09 19:50:31,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:50:31,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:50:31,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:50:31,412 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:50:31,413 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:50:31,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-09 19:50:32,832 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:50:33,230 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:50:33,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2024-11-09 19:50:33,262 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f6f9f25/13eba4eddbd343ea825e8a7b47b04956/FLAG6572c0d43 [2024-11-09 19:50:33,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95f6f9f25/13eba4eddbd343ea825e8a7b47b04956 [2024-11-09 19:50:33,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:50:33,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:50:33,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:50:33,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:50:33,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:50:33,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:50:33" (1/1) ... [2024-11-09 19:50:33,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e787094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:33, skipping insertion in model container [2024-11-09 19:50:33,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:50:33" (1/1) ... [2024-11-09 19:50:33,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:50:33,639 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/eca-rers2012/Problem17_label08.c[8572,8585] [2024-11-09 19:50:34,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:50:34,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:50:34,226 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/eca-rers2012/Problem17_label08.c[8572,8585] [2024-11-09 19:50:34,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:50:34,486 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:50:34,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34 WrapperNode [2024-11-09 19:50:34,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:50:34,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:50:34,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:50:34,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:50:34,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:34,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:34,756 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:50:34,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:50:34,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:50:34,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:50:34,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:50:34,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:34,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:34,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,038 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]. [2024-11-09 19:50:35,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,198 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:50:35,277 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:50:35,277 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:50:35,278 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:50:35,278 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (1/1) ... [2024-11-09 19:50:35,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:50:35,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:50:35,313 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) [2024-11-09 19:50:35,315 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 [2024-11-09 19:50:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:50:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:50:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:50:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:50:35,420 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:50:35,421 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:50:39,255 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:50:39,504 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:50:39,506 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:50:39,540 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:50:39,544 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:50:39,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:50:39 BoogieIcfgContainer [2024-11-09 19:50:39,545 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:50:39,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:50:39,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:50:39,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:50:39,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:50:33" (1/3) ... [2024-11-09 19:50:39,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277979e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:50:39, skipping insertion in model container [2024-11-09 19:50:39,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:50:34" (2/3) ... [2024-11-09 19:50:39,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277979e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:50:39, skipping insertion in model container [2024-11-09 19:50:39,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:50:39" (3/3) ... [2024-11-09 19:50:39,556 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2024-11-09 19:50:39,574 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:50:39,575 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:50:39,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:50:39,666 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;@20f99685, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:50:39,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:50:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 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) [2024-11-09 19:50:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 19:50:39,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:39,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:39,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:39,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash 125926634, now seen corresponding path program 1 times [2024-11-09 19:50:39,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436232591] [2024-11-09 19:50:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:40,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:40,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436232591] [2024-11-09 19:50:40,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436232591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:40,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:40,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:50:40,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613620576] [2024-11-09 19:50:40,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:40,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:40,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:40,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:40,110 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 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 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:50:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:43,143 INFO L93 Difference]: Finished difference Result 1648 states and 4104 transitions. [2024-11-09 19:50:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:43,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-09 19:50:43,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:43,167 INFO L225 Difference]: With dead ends: 1648 [2024-11-09 19:50:43,170 INFO L226 Difference]: Without dead ends: 978 [2024-11-09 19:50:43,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:43,179 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 790 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:43,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 556 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:50:43,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-09 19:50:43,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-09 19:50:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.2412731006160165) internal successors, (2183), 974 states have internal predecessors, (2183), 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) [2024-11-09 19:50:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2183 transitions. [2024-11-09 19:50:43,294 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2183 transitions. Word has length 60 [2024-11-09 19:50:43,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:43,294 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 2183 transitions. [2024-11-09 19:50:43,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:50:43,295 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2183 transitions. [2024-11-09 19:50:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 19:50:43,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:43,299 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:50:43,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:50:43,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:43,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2080959970, now seen corresponding path program 1 times [2024-11-09 19:50:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117056017] [2024-11-09 19:50:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:43,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:43,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117056017] [2024-11-09 19:50:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117056017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:43,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:43,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82881565] [2024-11-09 19:50:43,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:43,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:43,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:43,584 INFO L87 Difference]: Start difference. First operand 975 states and 2183 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-11-09 19:50:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:46,562 INFO L93 Difference]: Finished difference Result 2822 states and 6398 transitions. [2024-11-09 19:50:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:46,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2024-11-09 19:50:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:46,571 INFO L225 Difference]: With dead ends: 2822 [2024-11-09 19:50:46,571 INFO L226 Difference]: Without dead ends: 1849 [2024-11-09 19:50:46,573 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 [2024-11-09 19:50:46,574 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 791 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:46,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1285 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:50:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-09 19:50:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1847. [2024-11-09 19:50:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 2.1348862405200433) internal successors, (3941), 1846 states have internal predecessors, (3941), 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) [2024-11-09 19:50:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 3941 transitions. [2024-11-09 19:50:46,618 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 3941 transitions. Word has length 131 [2024-11-09 19:50:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:46,620 INFO L471 AbstractCegarLoop]: Abstraction has 1847 states and 3941 transitions. [2024-11-09 19:50:46,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-11-09 19:50:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 3941 transitions. [2024-11-09 19:50:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-09 19:50:46,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:46,630 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:46,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:50:46,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:46,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1101469031, now seen corresponding path program 1 times [2024-11-09 19:50:46,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:46,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369328969] [2024-11-09 19:50:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:46,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:46,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:46,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369328969] [2024-11-09 19:50:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369328969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:46,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:50:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200831247] [2024-11-09 19:50:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:46,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:46,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:46,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:46,802 INFO L87 Difference]: Start difference. First operand 1847 states and 3941 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-11-09 19:50:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:49,406 INFO L93 Difference]: Finished difference Result 5462 states and 11720 transitions. [2024-11-09 19:50:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2024-11-09 19:50:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:49,422 INFO L225 Difference]: With dead ends: 5462 [2024-11-09 19:50:49,422 INFO L226 Difference]: Without dead ends: 3617 [2024-11-09 19:50:49,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:49,427 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 799 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:49,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 279 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:50:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2024-11-09 19:50:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3592. [2024-11-09 19:50:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3591 states have (on average 2.132553606237817) internal successors, (7658), 3591 states have internal predecessors, (7658), 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) [2024-11-09 19:50:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 7658 transitions. [2024-11-09 19:50:49,501 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 7658 transitions. Word has length 153 [2024-11-09 19:50:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:49,502 INFO L471 AbstractCegarLoop]: Abstraction has 3592 states and 7658 transitions. [2024-11-09 19:50:49,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-11-09 19:50:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 7658 transitions. [2024-11-09 19:50:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-09 19:50:49,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:49,508 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:49,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:50:49,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:49,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:49,509 INFO L85 PathProgramCache]: Analyzing trace with hash 574484436, now seen corresponding path program 1 times [2024-11-09 19:50:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984643689] [2024-11-09 19:50:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:49,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984643689] [2024-11-09 19:50:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984643689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:49,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:50:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145904984] [2024-11-09 19:50:49,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:49,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:49,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:49,904 INFO L87 Difference]: Start difference. First operand 3592 states and 7658 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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) [2024-11-09 19:50:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:52,460 INFO L93 Difference]: Finished difference Result 8918 states and 19030 transitions. [2024-11-09 19:50:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:52,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 166 [2024-11-09 19:50:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:52,480 INFO L225 Difference]: With dead ends: 8918 [2024-11-09 19:50:52,481 INFO L226 Difference]: Without dead ends: 5328 [2024-11-09 19:50:52,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:52,487 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 713 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:52,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 543 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:50:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2024-11-09 19:50:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5305. [2024-11-09 19:50:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 5304 states have (on average 2.0891779788838614) internal successors, (11081), 5304 states have internal predecessors, (11081), 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) [2024-11-09 19:50:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 11081 transitions. [2024-11-09 19:50:52,588 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 11081 transitions. Word has length 166 [2024-11-09 19:50:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:52,589 INFO L471 AbstractCegarLoop]: Abstraction has 5305 states and 11081 transitions. [2024-11-09 19:50:52,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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) [2024-11-09 19:50:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 11081 transitions. [2024-11-09 19:50:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-09 19:50:52,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:52,592 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:50:52,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:50:52,592 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:52,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash 461608514, now seen corresponding path program 1 times [2024-11-09 19:50:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379182481] [2024-11-09 19:50:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:52,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:53,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:53,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379182481] [2024-11-09 19:50:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379182481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:53,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602975548] [2024-11-09 19:50:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:53,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:50:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:50:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:50:53,084 INFO L87 Difference]: Start difference. First operand 5305 states and 11081 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 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) [2024-11-09 19:50:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:55,789 INFO L93 Difference]: Finished difference Result 9321 states and 19557 transitions. [2024-11-09 19:50:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:50:55,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2024-11-09 19:50:55,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:55,845 INFO L225 Difference]: With dead ends: 9321 [2024-11-09 19:50:55,845 INFO L226 Difference]: Without dead ends: 4018 [2024-11-09 19:50:55,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:50:55,851 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 888 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:55,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 861 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 19:50:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2024-11-09 19:50:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 4018. [2024-11-09 19:50:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 4017 states have (on average 2.1030619865571323) internal successors, (8448), 4017 states have internal predecessors, (8448), 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) [2024-11-09 19:50:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 8448 transitions. [2024-11-09 19:50:55,943 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 8448 transitions. Word has length 172 [2024-11-09 19:50:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:55,944 INFO L471 AbstractCegarLoop]: Abstraction has 4018 states and 8448 transitions. [2024-11-09 19:50:55,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 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) [2024-11-09 19:50:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 8448 transitions. [2024-11-09 19:50:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-09 19:50:55,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:55,948 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:50:55,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:50:55,948 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:55,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1136485477, now seen corresponding path program 1 times [2024-11-09 19:50:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662159760] [2024-11-09 19:50:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:55,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:50:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662159760] [2024-11-09 19:50:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662159760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:56,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:56,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:50:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901629323] [2024-11-09 19:50:56,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:56,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:56,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:56,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:56,196 INFO L87 Difference]: Start difference. First operand 4018 states and 8448 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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) [2024-11-09 19:50:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:50:58,496 INFO L93 Difference]: Finished difference Result 11023 states and 23519 transitions. [2024-11-09 19:50:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:50:58,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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 201 [2024-11-09 19:50:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:50:58,528 INFO L225 Difference]: With dead ends: 11023 [2024-11-09 19:50:58,528 INFO L226 Difference]: Without dead ends: 5725 [2024-11-09 19:50:58,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:58,535 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:50:58,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 592 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:50:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2024-11-09 19:50:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 4438. [2024-11-09 19:50:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 4437 states have (on average 2.0153256704980844) internal successors, (8942), 4437 states have internal predecessors, (8942), 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) [2024-11-09 19:50:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 8942 transitions. [2024-11-09 19:50:58,675 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 8942 transitions. Word has length 201 [2024-11-09 19:50:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:50:58,675 INFO L471 AbstractCegarLoop]: Abstraction has 4438 states and 8942 transitions. [2024-11-09 19:50:58,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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) [2024-11-09 19:50:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 8942 transitions. [2024-11-09 19:50:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-09 19:50:58,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:50:58,683 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:50:58,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:50:58,683 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:50:58,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:50:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash -747486024, now seen corresponding path program 1 times [2024-11-09 19:50:58,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:50:58,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215133422] [2024-11-09 19:50:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:50:58,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:50:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:50:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:50:58,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:50:58,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215133422] [2024-11-09 19:50:58,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215133422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:50:58,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:50:58,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:50:58,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61708380] [2024-11-09 19:50:58,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:50:58,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:50:58,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:50:58,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:50:58,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:50:58,941 INFO L87 Difference]: Start difference. First operand 4438 states and 8942 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-11-09 19:51:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:01,158 INFO L93 Difference]: Finished difference Result 11427 states and 23333 transitions. [2024-11-09 19:51:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:01,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 214 [2024-11-09 19:51:01,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:01,172 INFO L225 Difference]: With dead ends: 11427 [2024-11-09 19:51:01,172 INFO L226 Difference]: Without dead ends: 6991 [2024-11-09 19:51:01,176 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 [2024-11-09 19:51:01,177 INFO L432 NwaCegarLoop]: 1088 mSDtfsCounter, 854 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:01,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1148 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:51:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6991 states. [2024-11-09 19:51:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6991 to 6991. [2024-11-09 19:51:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6990 states have (on average 2.002432045779685) internal successors, (13997), 6990 states have internal predecessors, (13997), 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) [2024-11-09 19:51:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 13997 transitions. [2024-11-09 19:51:01,281 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 13997 transitions. Word has length 214 [2024-11-09 19:51:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:01,281 INFO L471 AbstractCegarLoop]: Abstraction has 6991 states and 13997 transitions. [2024-11-09 19:51:01,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-11-09 19:51:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 13997 transitions. [2024-11-09 19:51:01,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-09 19:51:01,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:01,285 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-11-09 19:51:01,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:51:01,285 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:01,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash -358785006, now seen corresponding path program 1 times [2024-11-09 19:51:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40891592] [2024-11-09 19:51:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:01,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:51:01,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:01,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40891592] [2024-11-09 19:51:01,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40891592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:01,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:01,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:01,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570055268] [2024-11-09 19:51:01,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:01,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:01,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:01,486 INFO L87 Difference]: Start difference. First operand 6991 states and 13997 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 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) [2024-11-09 19:51:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:03,759 INFO L93 Difference]: Finished difference Result 16955 states and 34162 transitions. [2024-11-09 19:51:03,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:03,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 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 216 [2024-11-09 19:51:03,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:03,781 INFO L225 Difference]: With dead ends: 16955 [2024-11-09 19:51:03,781 INFO L226 Difference]: Without dead ends: 9965 [2024-11-09 19:51:03,789 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 [2024-11-09 19:51:03,790 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 751 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:03,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 450 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:51:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2024-11-09 19:51:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 7391. [2024-11-09 19:51:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7391 states, 7390 states have (on average 2.002706359945873) internal successors, (14800), 7390 states have internal predecessors, (14800), 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) [2024-11-09 19:51:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7391 states to 7391 states and 14800 transitions. [2024-11-09 19:51:03,914 INFO L78 Accepts]: Start accepts. Automaton has 7391 states and 14800 transitions. Word has length 216 [2024-11-09 19:51:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:03,915 INFO L471 AbstractCegarLoop]: Abstraction has 7391 states and 14800 transitions. [2024-11-09 19:51:03,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 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) [2024-11-09 19:51:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7391 states and 14800 transitions. [2024-11-09 19:51:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-09 19:51:03,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:03,920 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:03,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:51:03,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:03,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:03,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1248479417, now seen corresponding path program 1 times [2024-11-09 19:51:03,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:03,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115478051] [2024-11-09 19:51:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:03,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:04,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:04,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115478051] [2024-11-09 19:51:04,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115478051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:04,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:04,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:04,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037424991] [2024-11-09 19:51:04,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:04,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:04,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:04,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:04,194 INFO L87 Difference]: Start difference. First operand 7391 states and 14800 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:51:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:06,280 INFO L93 Difference]: Finished difference Result 16066 states and 32135 transitions. [2024-11-09 19:51:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:06,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 282 [2024-11-09 19:51:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:06,300 INFO L225 Difference]: With dead ends: 16066 [2024-11-09 19:51:06,300 INFO L226 Difference]: Without dead ends: 8677 [2024-11-09 19:51:06,308 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 [2024-11-09 19:51:06,309 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 736 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:06,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1257 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:51:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8677 states. [2024-11-09 19:51:06,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8677 to 8245. [2024-11-09 19:51:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8245 states, 8244 states have (on average 1.9969674915089761) internal successors, (16463), 8244 states have internal predecessors, (16463), 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) [2024-11-09 19:51:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 16463 transitions. [2024-11-09 19:51:06,423 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 16463 transitions. Word has length 282 [2024-11-09 19:51:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:06,424 INFO L471 AbstractCegarLoop]: Abstraction has 8245 states and 16463 transitions. [2024-11-09 19:51:06,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:51:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 16463 transitions. [2024-11-09 19:51:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-09 19:51:06,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:06,428 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:06,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:51:06,428 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:06,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash 307268201, now seen corresponding path program 1 times [2024-11-09 19:51:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412503589] [2024-11-09 19:51:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:51:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412503589] [2024-11-09 19:51:06,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412503589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:06,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:06,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50625635] [2024-11-09 19:51:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:06,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:06,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:06,855 INFO L87 Difference]: Start difference. First operand 8245 states and 16463 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-11-09 19:51:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:08,976 INFO L93 Difference]: Finished difference Result 20359 states and 40907 transitions. [2024-11-09 19:51:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:08,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 295 [2024-11-09 19:51:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:08,996 INFO L225 Difference]: With dead ends: 20359 [2024-11-09 19:51:08,996 INFO L226 Difference]: Without dead ends: 11687 [2024-11-09 19:51:09,006 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 [2024-11-09 19:51:09,007 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 853 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:09,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 997 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:51:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11687 states. [2024-11-09 19:51:09,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11687 to 10827. [2024-11-09 19:51:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 10826 states have (on average 2.006004064289673) internal successors, (21717), 10826 states have internal predecessors, (21717), 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) [2024-11-09 19:51:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 21717 transitions. [2024-11-09 19:51:09,151 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 21717 transitions. Word has length 295 [2024-11-09 19:51:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:09,151 INFO L471 AbstractCegarLoop]: Abstraction has 10827 states and 21717 transitions. [2024-11-09 19:51:09,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-11-09 19:51:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 21717 transitions. [2024-11-09 19:51:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-09 19:51:09,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:09,156 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:09,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:51:09,156 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:09,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 145284124, now seen corresponding path program 1 times [2024-11-09 19:51:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502160570] [2024-11-09 19:51:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:51:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:09,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502160570] [2024-11-09 19:51:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502160570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:09,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:09,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121028218] [2024-11-09 19:51:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:09,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:09,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:09,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:09,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:09,390 INFO L87 Difference]: Start difference. First operand 10827 states and 21717 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-09 19:51:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:11,403 INFO L93 Difference]: Finished difference Result 27190 states and 55059 transitions. [2024-11-09 19:51:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:11,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 300 [2024-11-09 19:51:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:11,431 INFO L225 Difference]: With dead ends: 27190 [2024-11-09 19:51:11,432 INFO L226 Difference]: Without dead ends: 16365 [2024-11-09 19:51:11,444 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 [2024-11-09 19:51:11,447 INFO L432 NwaCegarLoop]: 1135 mSDtfsCounter, 738 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:11,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1203 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:51:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16365 states. [2024-11-09 19:51:11,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16365 to 15513. [2024-11-09 19:51:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15513 states, 15512 states have (on average 1.9804022692109335) internal successors, (30720), 15512 states have internal predecessors, (30720), 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) [2024-11-09 19:51:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15513 states to 15513 states and 30720 transitions. [2024-11-09 19:51:11,659 INFO L78 Accepts]: Start accepts. Automaton has 15513 states and 30720 transitions. Word has length 300 [2024-11-09 19:51:11,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:11,660 INFO L471 AbstractCegarLoop]: Abstraction has 15513 states and 30720 transitions. [2024-11-09 19:51:11,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2024-11-09 19:51:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 15513 states and 30720 transitions. [2024-11-09 19:51:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-09 19:51:11,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:11,666 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-11-09 19:51:11,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:51:11,667 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:11,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:11,667 INFO L85 PathProgramCache]: Analyzing trace with hash 554662408, now seen corresponding path program 1 times [2024-11-09 19:51:11,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:11,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195223787] [2024-11-09 19:51:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:11,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:11,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195223787] [2024-11-09 19:51:11,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195223787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:11,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:11,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277848789] [2024-11-09 19:51:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:11,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:11,996 INFO L87 Difference]: Start difference. First operand 15513 states and 30720 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-11-09 19:51:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:14,044 INFO L93 Difference]: Finished difference Result 36154 states and 71841 transitions. [2024-11-09 19:51:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 318 [2024-11-09 19:51:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:14,073 INFO L225 Difference]: With dead ends: 36154 [2024-11-09 19:51:14,073 INFO L226 Difference]: Without dead ends: 20210 [2024-11-09 19:51:14,088 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 [2024-11-09 19:51:14,089 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 788 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:14,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 353 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:51:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20210 states. [2024-11-09 19:51:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20210 to 19351. [2024-11-09 19:51:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19351 states, 19350 states have (on average 1.98656330749354) internal successors, (38440), 19350 states have internal predecessors, (38440), 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) [2024-11-09 19:51:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19351 states to 19351 states and 38440 transitions. [2024-11-09 19:51:14,436 INFO L78 Accepts]: Start accepts. Automaton has 19351 states and 38440 transitions. Word has length 318 [2024-11-09 19:51:14,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:14,436 INFO L471 AbstractCegarLoop]: Abstraction has 19351 states and 38440 transitions. [2024-11-09 19:51:14,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-11-09 19:51:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 19351 states and 38440 transitions. [2024-11-09 19:51:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-09 19:51:14,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:14,442 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:51:14,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:51:14,443 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:14,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1715066845, now seen corresponding path program 1 times [2024-11-09 19:51:14,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:14,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728766361] [2024-11-09 19:51:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:14,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:14,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:14,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728766361] [2024-11-09 19:51:14,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728766361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:14,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:14,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:51:14,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492826619] [2024-11-09 19:51:14,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:14,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:14,816 INFO L87 Difference]: Start difference. First operand 19351 states and 38440 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-11-09 19:51:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:18,799 INFO L93 Difference]: Finished difference Result 61391 states and 122001 transitions. [2024-11-09 19:51:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:18,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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 323 [2024-11-09 19:51:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:18,858 INFO L225 Difference]: With dead ends: 61391 [2024-11-09 19:51:18,858 INFO L226 Difference]: Without dead ends: 40758 [2024-11-09 19:51:18,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:18,876 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 1580 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4212 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 4662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 4212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:18,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 331 Invalid, 4662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 4212 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:51:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40758 states. [2024-11-09 19:51:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40758 to 40280. [2024-11-09 19:51:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40280 states, 40279 states have (on average 1.9736835571886095) internal successors, (79498), 40279 states have internal predecessors, (79498), 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) [2024-11-09 19:51:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40280 states to 40280 states and 79498 transitions. [2024-11-09 19:51:19,425 INFO L78 Accepts]: Start accepts. Automaton has 40280 states and 79498 transitions. Word has length 323 [2024-11-09 19:51:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:19,426 INFO L471 AbstractCegarLoop]: Abstraction has 40280 states and 79498 transitions. [2024-11-09 19:51:19,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-11-09 19:51:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 40280 states and 79498 transitions. [2024-11-09 19:51:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-09 19:51:19,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:19,432 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:19,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:51:19,432 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:19,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:19,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1617022792, now seen corresponding path program 1 times [2024-11-09 19:51:19,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:19,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060247701] [2024-11-09 19:51:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:19,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:19,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:19,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060247701] [2024-11-09 19:51:19,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060247701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:19,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:19,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:19,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852014438] [2024-11-09 19:51:19,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:19,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:19,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:19,696 INFO L87 Difference]: Start difference. First operand 40280 states and 79498 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-11-09 19:51:22,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:22,096 INFO L93 Difference]: Finished difference Result 92982 states and 183184 transitions. [2024-11-09 19:51:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 351 [2024-11-09 19:51:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:22,182 INFO L225 Difference]: With dead ends: 92982 [2024-11-09 19:51:22,182 INFO L226 Difference]: Without dead ends: 52265 [2024-11-09 19:51:22,208 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 [2024-11-09 19:51:22,209 INFO L432 NwaCegarLoop]: 1015 mSDtfsCounter, 807 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:22,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1067 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:51:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52265 states. [2024-11-09 19:51:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52265 to 50517. [2024-11-09 19:51:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50517 states, 50516 states have (on average 1.9592208409216882) internal successors, (98972), 50516 states have internal predecessors, (98972), 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) [2024-11-09 19:51:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50517 states to 50517 states and 98972 transitions. [2024-11-09 19:51:22,935 INFO L78 Accepts]: Start accepts. Automaton has 50517 states and 98972 transitions. Word has length 351 [2024-11-09 19:51:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:22,935 INFO L471 AbstractCegarLoop]: Abstraction has 50517 states and 98972 transitions. [2024-11-09 19:51:22,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-11-09 19:51:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 50517 states and 98972 transitions. [2024-11-09 19:51:22,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-11-09 19:51:22,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:22,943 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:22,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:51:22,944 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:22,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 691538755, now seen corresponding path program 1 times [2024-11-09 19:51:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058849124] [2024-11-09 19:51:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:51:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058849124] [2024-11-09 19:51:24,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058849124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:24,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:24,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:24,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728986522] [2024-11-09 19:51:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:24,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:24,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:24,021 INFO L87 Difference]: Start difference. First operand 50517 states and 98972 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2024-11-09 19:51:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:25,927 INFO L93 Difference]: Finished difference Result 101029 states and 197939 transitions. [2024-11-09 19:51:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:25,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 396 [2024-11-09 19:51:25,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:25,994 INFO L225 Difference]: With dead ends: 101029 [2024-11-09 19:51:25,994 INFO L226 Difference]: Without dead ends: 50513 [2024-11-09 19:51:26,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:26,154 INFO L432 NwaCegarLoop]: 905 mSDtfsCounter, 931 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:26,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 928 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:51:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50513 states. [2024-11-09 19:51:26,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50513 to 49657. [2024-11-09 19:51:26,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49657 states, 49656 states have (on average 1.959461092315128) internal successors, (97299), 49656 states have internal predecessors, (97299), 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) [2024-11-09 19:51:26,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49657 states to 49657 states and 97299 transitions. [2024-11-09 19:51:26,904 INFO L78 Accepts]: Start accepts. Automaton has 49657 states and 97299 transitions. Word has length 396 [2024-11-09 19:51:26,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:26,904 INFO L471 AbstractCegarLoop]: Abstraction has 49657 states and 97299 transitions. [2024-11-09 19:51:26,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2024-11-09 19:51:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 49657 states and 97299 transitions. [2024-11-09 19:51:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-09 19:51:26,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:26,921 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:26,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:51:26,921 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:26,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 757055945, now seen corresponding path program 1 times [2024-11-09 19:51:26,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:26,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309337057] [2024-11-09 19:51:26,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:26,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 248 proven. 83 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 19:51:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309337057] [2024-11-09 19:51:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309337057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:51:27,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241195112] [2024-11-09 19:51:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:27,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:51:27,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:27,748 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) [2024-11-09 19:51:27,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:51:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:27,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:51:27,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:51:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 248 proven. 83 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 19:51:28,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:51:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 19:51:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241195112] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:51:28,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:51:28,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:51:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693644253] [2024-11-09 19:51:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:28,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:28,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:51:28,772 INFO L87 Difference]: Start difference. First operand 49657 states and 97299 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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) [2024-11-09 19:51:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:32,460 INFO L93 Difference]: Finished difference Result 118936 states and 233065 transitions. [2024-11-09 19:51:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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 399 [2024-11-09 19:51:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:32,552 INFO L225 Difference]: With dead ends: 118936 [2024-11-09 19:51:32,552 INFO L226 Difference]: Without dead ends: 68411 [2024-11-09 19:51:32,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:51:32,755 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 1459 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:32,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 160 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 19:51:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68411 states. [2024-11-09 19:51:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68411 to 66278. [2024-11-09 19:51:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66278 states, 66277 states have (on average 1.9466330702958794) internal successors, (129017), 66277 states have internal predecessors, (129017), 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) [2024-11-09 19:51:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66278 states to 66278 states and 129017 transitions. [2024-11-09 19:51:33,899 INFO L78 Accepts]: Start accepts. Automaton has 66278 states and 129017 transitions. Word has length 399 [2024-11-09 19:51:33,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:33,899 INFO L471 AbstractCegarLoop]: Abstraction has 66278 states and 129017 transitions. [2024-11-09 19:51:33,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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) [2024-11-09 19:51:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 66278 states and 129017 transitions. [2024-11-09 19:51:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-09 19:51:33,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:33,907 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:33,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:51:34,107 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 [2024-11-09 19:51:34,108 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:34,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1118382737, now seen corresponding path program 1 times [2024-11-09 19:51:34,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:34,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751622396] [2024-11-09 19:51:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:34,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2024-11-09 19:51:34,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751622396] [2024-11-09 19:51:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751622396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:34,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:34,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996513290] [2024-11-09 19:51:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:34,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:34,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:34,329 INFO L87 Difference]: Start difference. First operand 66278 states and 129017 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-11-09 19:51:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:36,964 INFO L93 Difference]: Finished difference Result 143217 states and 278956 transitions. [2024-11-09 19:51:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:36,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 410 [2024-11-09 19:51:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:37,093 INFO L225 Difference]: With dead ends: 143217 [2024-11-09 19:51:37,093 INFO L226 Difference]: Without dead ends: 76512 [2024-11-09 19:51:37,137 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 [2024-11-09 19:51:37,137 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 790 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:37,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1072 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:51:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76512 states. [2024-11-09 19:51:38,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76512 to 76504. [2024-11-09 19:51:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76504 states, 76503 states have (on average 1.9367214357606892) internal successors, (148165), 76503 states have internal predecessors, (148165), 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) [2024-11-09 19:51:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76504 states to 76504 states and 148165 transitions. [2024-11-09 19:51:38,605 INFO L78 Accepts]: Start accepts. Automaton has 76504 states and 148165 transitions. Word has length 410 [2024-11-09 19:51:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:38,606 INFO L471 AbstractCegarLoop]: Abstraction has 76504 states and 148165 transitions. [2024-11-09 19:51:38,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-11-09 19:51:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 76504 states and 148165 transitions. [2024-11-09 19:51:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-09 19:51:38,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:38,612 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:38,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:51:38,613 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:38,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash 127068904, now seen corresponding path program 1 times [2024-11-09 19:51:38,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:38,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114722706] [2024-11-09 19:51:38,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:38,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:51:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:39,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114722706] [2024-11-09 19:51:39,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114722706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:39,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:39,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:39,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868450930] [2024-11-09 19:51:39,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:39,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:39,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:39,265 INFO L87 Difference]: Start difference. First operand 76504 states and 148165 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2024-11-09 19:51:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:41,607 INFO L93 Difference]: Finished difference Result 157270 states and 304498 transitions. [2024-11-09 19:51:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:41,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 429 [2024-11-09 19:51:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:41,725 INFO L225 Difference]: With dead ends: 157270 [2024-11-09 19:51:41,725 INFO L226 Difference]: Without dead ends: 80768 [2024-11-09 19:51:41,769 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 [2024-11-09 19:51:41,769 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 716 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:41,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 352 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:51:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80768 states. [2024-11-09 19:51:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80768 to 79910. [2024-11-09 19:51:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79910 states, 79909 states have (on average 1.9349510067702012) internal successors, (154620), 79909 states have internal predecessors, (154620), 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) [2024-11-09 19:51:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79910 states to 79910 states and 154620 transitions. [2024-11-09 19:51:43,337 INFO L78 Accepts]: Start accepts. Automaton has 79910 states and 154620 transitions. Word has length 429 [2024-11-09 19:51:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:43,337 INFO L471 AbstractCegarLoop]: Abstraction has 79910 states and 154620 transitions. [2024-11-09 19:51:43,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2024-11-09 19:51:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 79910 states and 154620 transitions. [2024-11-09 19:51:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-09 19:51:43,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:43,347 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:51:43,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:51:43,348 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:43,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2114224973, now seen corresponding path program 1 times [2024-11-09 19:51:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:43,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227526002] [2024-11-09 19:51:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-09 19:51:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227526002] [2024-11-09 19:51:43,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227526002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:43,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:43,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:43,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91534553] [2024-11-09 19:51:43,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:43,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:43,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:43,588 INFO L87 Difference]: Start difference. First operand 79910 states and 154620 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2024-11-09 19:51:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:46,079 INFO L93 Difference]: Finished difference Result 167065 states and 323555 transitions. [2024-11-09 19:51:46,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:46,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 439 [2024-11-09 19:51:46,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:46,181 INFO L225 Difference]: With dead ends: 167065 [2024-11-09 19:51:46,182 INFO L226 Difference]: Without dead ends: 86301 [2024-11-09 19:51:46,222 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 [2024-11-09 19:51:46,223 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 806 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:46,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 971 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:51:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86301 states. [2024-11-09 19:51:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86301 to 76046. [2024-11-09 19:51:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76046 states, 76045 states have (on average 1.9353935169965153) internal successors, (147177), 76045 states have internal predecessors, (147177), 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) [2024-11-09 19:51:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76046 states to 76046 states and 147177 transitions. [2024-11-09 19:51:48,062 INFO L78 Accepts]: Start accepts. Automaton has 76046 states and 147177 transitions. Word has length 439 [2024-11-09 19:51:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:48,063 INFO L471 AbstractCegarLoop]: Abstraction has 76046 states and 147177 transitions. [2024-11-09 19:51:48,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2024-11-09 19:51:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 76046 states and 147177 transitions. [2024-11-09 19:51:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-09 19:51:48,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:48,077 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:51:48,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 19:51:48,077 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:48,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1413426760, now seen corresponding path program 1 times [2024-11-09 19:51:48,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:48,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163853849] [2024-11-09 19:51:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:48,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat