./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label38.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/Problem03_label38.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 d6ab095cb4c47e2e0ab83610e7dceb2c658ebc8f7a2b4be1c26690c64da4af60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:40:57,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:40:57,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:40:57,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:40:57,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:40:57,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:40:57,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:40:57,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:40:57,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:40:57,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:40:57,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:40:57,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:40:57,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:40:57,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:40:57,175 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:40:57,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:40:57,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:40:57,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:40:57,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:40:57,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:40:57,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:40:57,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:40:57,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:40:57,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:40:57,180 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:40:57,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:40:57,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:40:57,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:40:57,181 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:40:57,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:40:57,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:40:57,182 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:40:57,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:40:57,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:40:57,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:40:57,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:40:57,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:40:57,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:40:57,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:40:57,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:40:57,185 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:40:57,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:40:57,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6ab095cb4c47e2e0ab83610e7dceb2c658ebc8f7a2b4be1c26690c64da4af60 [2024-11-09 18:40:57,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:40:57,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:40:57,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:40:57,469 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:40:57,471 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:40:57,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label38.c [2024-11-09 18:40:58,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:40:59,286 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:40:59,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label38.c [2024-11-09 18:40:59,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e77a941/88e9716d5847411b86b7ab8cc9f0a9d1/FLAG26a4baf9b [2024-11-09 18:40:59,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e77a941/88e9716d5847411b86b7ab8cc9f0a9d1 [2024-11-09 18:40:59,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:40:59,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:40:59,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:40:59,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:40:59,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:40:59,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:40:59" (1/1) ... [2024-11-09 18:40:59,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d3cc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:59, skipping insertion in model container [2024-11-09 18:40:59,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:40:59" (1/1) ... [2024-11-09 18:40:59,402 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:40:59,982 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/Problem03_label38.c[61364,61377] [2024-11-09 18:41:00,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:41:00,027 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:41:00,193 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/Problem03_label38.c[61364,61377] [2024-11-09 18:41:00,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:41:00,222 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:41:00,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00 WrapperNode [2024-11-09 18:41:00,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:41:00,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:41:00,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:41:00,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:41:00,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,343 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:41:00,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:41:00,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:41:00,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:41:00,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:41:00,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,443 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 18:41:00,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,487 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:41:00,529 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:41:00,529 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:41:00,530 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:41:00,530 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:41:00,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:00,567 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 18:41:00,573 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 18:41:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:41:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:41:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:41:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:41:00,726 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:41:00,728 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:41:02,679 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:41:02,679 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:41:02,702 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:41:02,702 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:41:02,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:41:02 BoogieIcfgContainer [2024-11-09 18:41:02,702 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:41:02,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:41:02,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:41:02,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:41:02,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:40:59" (1/3) ... [2024-11-09 18:41:02,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b874207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:41:02, skipping insertion in model container [2024-11-09 18:41:02,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (2/3) ... [2024-11-09 18:41:02,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b874207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:41:02, skipping insertion in model container [2024-11-09 18:41:02,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:41:02" (3/3) ... [2024-11-09 18:41:02,730 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label38.c [2024-11-09 18:41:02,748 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:41:02,748 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:41:02,823 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:41:02,830 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;@67c24db5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:41:02,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:41:02,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 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 18:41:02,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-09 18:41:02,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:02,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:02,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:02,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash 901798540, now seen corresponding path program 1 times [2024-11-09 18:41:02,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:02,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398870509] [2024-11-09 18:41:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398870509] [2024-11-09 18:41:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398870509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:03,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:03,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880518882] [2024-11-09 18:41:03,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:03,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:03,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:03,822 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 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 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 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 18:41:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:04,868 INFO L93 Difference]: Finished difference Result 861 states and 1502 transitions. [2024-11-09 18:41:04,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2024-11-09 18:41:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:04,883 INFO L225 Difference]: With dead ends: 861 [2024-11-09 18:41:04,884 INFO L226 Difference]: Without dead ends: 463 [2024-11-09 18:41:04,887 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 18:41:04,891 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 95 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:04,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 179 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 18:41:04,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-09 18:41:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 462. [2024-11-09 18:41:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5466377440347072) internal successors, (713), 461 states have internal predecessors, (713), 0 states have call successors, (0), 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 18:41:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 713 transitions. [2024-11-09 18:41:04,946 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 713 transitions. Word has length 203 [2024-11-09 18:41:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:04,947 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 713 transitions. [2024-11-09 18:41:04,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 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 18:41:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 713 transitions. [2024-11-09 18:41:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-09 18:41:04,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:04,952 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:04,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:41:04,954 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:04,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1122541460, now seen corresponding path program 1 times [2024-11-09 18:41:04,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:04,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703040746] [2024-11-09 18:41:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703040746] [2024-11-09 18:41:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703040746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:05,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:05,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:05,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162380049] [2024-11-09 18:41:05,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:05,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:05,358 INFO L87 Difference]: Start difference. First operand 462 states and 713 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 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 18:41:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:05,634 INFO L93 Difference]: Finished difference Result 1381 states and 2134 transitions. [2024-11-09 18:41:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:05,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 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 209 [2024-11-09 18:41:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:05,641 INFO L225 Difference]: With dead ends: 1381 [2024-11-09 18:41:05,641 INFO L226 Difference]: Without dead ends: 921 [2024-11-09 18:41:05,642 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 18:41:05,644 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 367 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:05,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 600 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:41:05,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-09 18:41:05,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 918. [2024-11-09 18:41:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.5430752453653216) internal successors, (1415), 917 states have internal predecessors, (1415), 0 states have call successors, (0), 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 18:41:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1415 transitions. [2024-11-09 18:41:05,688 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1415 transitions. Word has length 209 [2024-11-09 18:41:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:05,689 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1415 transitions. [2024-11-09 18:41:05,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 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 18:41:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1415 transitions. [2024-11-09 18:41:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-09 18:41:05,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:05,695 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:05,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:41:05,696 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:05,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash -84730938, now seen corresponding path program 1 times [2024-11-09 18:41:05,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:05,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15224488] [2024-11-09 18:41:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:05,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:05,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15224488] [2024-11-09 18:41:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15224488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:05,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:05,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045228387] [2024-11-09 18:41:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:05,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:05,910 INFO L87 Difference]: Start difference. First operand 918 states and 1415 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 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 18:41:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:06,808 INFO L93 Difference]: Finished difference Result 2699 states and 4185 transitions. [2024-11-09 18:41:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 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 212 [2024-11-09 18:41:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:06,815 INFO L225 Difference]: With dead ends: 2699 [2024-11-09 18:41:06,816 INFO L226 Difference]: Without dead ends: 1783 [2024-11-09 18:41:06,818 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 18:41:06,819 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:06,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 158 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:41:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-09 18:41:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1747. [2024-11-09 18:41:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 1.5108820160366552) internal successors, (2638), 1746 states have internal predecessors, (2638), 0 states have call successors, (0), 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 18:41:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2638 transitions. [2024-11-09 18:41:06,855 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2638 transitions. Word has length 212 [2024-11-09 18:41:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:06,855 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2638 transitions. [2024-11-09 18:41:06,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 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 18:41:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2638 transitions. [2024-11-09 18:41:06,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-09 18:41:06,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:06,862 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:06,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:41:06,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:06,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1471921931, now seen corresponding path program 1 times [2024-11-09 18:41:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114618077] [2024-11-09 18:41:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:06,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:07,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:07,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114618077] [2024-11-09 18:41:07,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114618077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:07,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:07,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564963721] [2024-11-09 18:41:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:07,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:07,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:07,053 INFO L87 Difference]: Start difference. First operand 1747 states and 2638 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 18:41:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:07,444 INFO L93 Difference]: Finished difference Result 5205 states and 7870 transitions. [2024-11-09 18:41:07,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:07,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2024-11-09 18:41:07,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:07,458 INFO L225 Difference]: With dead ends: 5205 [2024-11-09 18:41:07,458 INFO L226 Difference]: Without dead ends: 3460 [2024-11-09 18:41:07,463 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 18:41:07,465 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 350 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:07,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 517 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:41:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2024-11-09 18:41:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3455. [2024-11-09 18:41:07,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3454 states have (on average 1.5049218297625941) internal successors, (5198), 3454 states have internal predecessors, (5198), 0 states have call successors, (0), 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 18:41:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 5198 transitions. [2024-11-09 18:41:07,544 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 5198 transitions. Word has length 218 [2024-11-09 18:41:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:07,544 INFO L471 AbstractCegarLoop]: Abstraction has 3455 states and 5198 transitions. [2024-11-09 18:41:07,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 18:41:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 5198 transitions. [2024-11-09 18:41:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 18:41:07,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:07,552 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:07,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:41:07,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:07,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash -711285261, now seen corresponding path program 1 times [2024-11-09 18:41:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:07,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215321602] [2024-11-09 18:41:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:41:07,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215321602] [2024-11-09 18:41:07,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215321602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747080243] [2024-11-09 18:41:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:07,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:07,887 INFO L87 Difference]: Start difference. First operand 3455 states and 5198 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 18:41:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:08,775 INFO L93 Difference]: Finished difference Result 8581 states and 12863 transitions. [2024-11-09 18:41:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:08,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 220 [2024-11-09 18:41:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:08,796 INFO L225 Difference]: With dead ends: 8581 [2024-11-09 18:41:08,797 INFO L226 Difference]: Without dead ends: 5128 [2024-11-09 18:41:08,803 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 18:41:08,804 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 234 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:08,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 118 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5128 states. [2024-11-09 18:41:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5128 to 5124. [2024-11-09 18:41:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5123 states have (on average 1.4708178801483505) internal successors, (7535), 5123 states have internal predecessors, (7535), 0 states have call successors, (0), 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 18:41:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 7535 transitions. [2024-11-09 18:41:08,906 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 7535 transitions. Word has length 220 [2024-11-09 18:41:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:08,907 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 7535 transitions. [2024-11-09 18:41:08,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 18:41:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 7535 transitions. [2024-11-09 18:41:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-09 18:41:08,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:08,916 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:08,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:41:08,917 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:08,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1915008442, now seen corresponding path program 1 times [2024-11-09 18:41:08,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:08,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508064622] [2024-11-09 18:41:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:08,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:41:09,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:09,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508064622] [2024-11-09 18:41:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508064622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:09,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:09,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837243709] [2024-11-09 18:41:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:09,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:09,185 INFO L87 Difference]: Start difference. First operand 5124 states and 7535 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 18:41:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:10,037 INFO L93 Difference]: Finished difference Result 15199 states and 22369 transitions. [2024-11-09 18:41:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 227 [2024-11-09 18:41:10,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:10,080 INFO L225 Difference]: With dead ends: 15199 [2024-11-09 18:41:10,080 INFO L226 Difference]: Without dead ends: 10077 [2024-11-09 18:41:10,091 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 18:41:10,092 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 239 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:10,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 184 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10077 states. [2024-11-09 18:41:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10077 to 10065. [2024-11-09 18:41:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10065 states, 10064 states have (on average 1.400039745627981) internal successors, (14090), 10064 states have internal predecessors, (14090), 0 states have call successors, (0), 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 18:41:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10065 states to 10065 states and 14090 transitions. [2024-11-09 18:41:10,367 INFO L78 Accepts]: Start accepts. Automaton has 10065 states and 14090 transitions. Word has length 227 [2024-11-09 18:41:10,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:10,368 INFO L471 AbstractCegarLoop]: Abstraction has 10065 states and 14090 transitions. [2024-11-09 18:41:10,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 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 18:41:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 10065 states and 14090 transitions. [2024-11-09 18:41:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 18:41:10,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:10,389 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:10,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:41:10,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:10,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1717255526, now seen corresponding path program 1 times [2024-11-09 18:41:10,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:10,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623944854] [2024-11-09 18:41:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:10,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623944854] [2024-11-09 18:41:10,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623944854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908118385] [2024-11-09 18:41:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:10,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:10,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:10,737 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 18:41:10,738 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 18:41:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:10,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:10,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:41:10,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908118385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:10,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:10,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:41:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731231556] [2024-11-09 18:41:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:10,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:10,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:10,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:10,948 INFO L87 Difference]: Start difference. First operand 10065 states and 14090 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 18:41:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:11,971 INFO L93 Difference]: Finished difference Result 29932 states and 41916 transitions. [2024-11-09 18:41:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 228 [2024-11-09 18:41:11,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:12,035 INFO L225 Difference]: With dead ends: 29932 [2024-11-09 18:41:12,035 INFO L226 Difference]: Without dead ends: 19869 [2024-11-09 18:41:12,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:12,054 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 232 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:12,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 416 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:12,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19869 states. [2024-11-09 18:41:12,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19869 to 19857. [2024-11-09 18:41:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19857 states, 19856 states have (on average 1.253726833199033) internal successors, (24894), 19856 states have internal predecessors, (24894), 0 states have call successors, (0), 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 18:41:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19857 states to 19857 states and 24894 transitions. [2024-11-09 18:41:12,631 INFO L78 Accepts]: Start accepts. Automaton has 19857 states and 24894 transitions. Word has length 228 [2024-11-09 18:41:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:12,631 INFO L471 AbstractCegarLoop]: Abstraction has 19857 states and 24894 transitions. [2024-11-09 18:41:12,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 18:41:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 19857 states and 24894 transitions. [2024-11-09 18:41:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-09 18:41:12,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:12,657 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:12,675 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 18:41:12,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:12,859 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:12,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2064127840, now seen corresponding path program 1 times [2024-11-09 18:41:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:12,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747177169] [2024-11-09 18:41:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:13,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747177169] [2024-11-09 18:41:13,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747177169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:13,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639184598] [2024-11-09 18:41:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:13,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:13,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:13,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:13,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:41:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:13,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:13,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:41:13,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639184598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:13,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:13,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:41:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806906170] [2024-11-09 18:41:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:13,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:13,987 INFO L87 Difference]: Start difference. First operand 19857 states and 24894 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 18:41:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:15,048 INFO L93 Difference]: Finished difference Result 57736 states and 72500 transitions. [2024-11-09 18:41:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:15,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 253 [2024-11-09 18:41:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:15,128 INFO L225 Difference]: With dead ends: 57736 [2024-11-09 18:41:15,128 INFO L226 Difference]: Without dead ends: 37881 [2024-11-09 18:41:15,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:15,160 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 48 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:15,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 410 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:41:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37881 states. [2024-11-09 18:41:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37881 to 37849. [2024-11-09 18:41:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37849 states, 37848 states have (on average 1.2218347072500528) internal successors, (46244), 37848 states have internal predecessors, (46244), 0 states have call successors, (0), 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 18:41:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37849 states to 37849 states and 46244 transitions. [2024-11-09 18:41:16,002 INFO L78 Accepts]: Start accepts. Automaton has 37849 states and 46244 transitions. Word has length 253 [2024-11-09 18:41:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:16,003 INFO L471 AbstractCegarLoop]: Abstraction has 37849 states and 46244 transitions. [2024-11-09 18:41:16,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 18:41:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 37849 states and 46244 transitions. [2024-11-09 18:41:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-09 18:41:16,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:16,040 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:16,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:41:16,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 18:41:16,241 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:16,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash -382954461, now seen corresponding path program 1 times [2024-11-09 18:41:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:16,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384669295] [2024-11-09 18:41:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 18:41:17,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:17,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384669295] [2024-11-09 18:41:17,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384669295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:17,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925572585] [2024-11-09 18:41:17,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:17,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:17,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:17,744 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:17,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:41:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:17,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:17,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 18:41:18,150 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925572585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438072886] [2024-11-09 18:41:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:18,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:18,153 INFO L87 Difference]: Start difference. First operand 37849 states and 46244 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 18:41:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:19,256 INFO L93 Difference]: Finished difference Result 90804 states and 112962 transitions. [2024-11-09 18:41:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 264 [2024-11-09 18:41:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:19,362 INFO L225 Difference]: With dead ends: 90804 [2024-11-09 18:41:19,362 INFO L226 Difference]: Without dead ends: 52957 [2024-11-09 18:41:19,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:19,400 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 52 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:19,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 403 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:41:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52957 states. [2024-11-09 18:41:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52957 to 52945. [2024-11-09 18:41:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52945 states, 52944 states have (on average 1.2441825324871563) internal successors, (65872), 52944 states have internal predecessors, (65872), 0 states have call successors, (0), 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 18:41:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52945 states to 52945 states and 65872 transitions. [2024-11-09 18:41:20,391 INFO L78 Accepts]: Start accepts. Automaton has 52945 states and 65872 transitions. Word has length 264 [2024-11-09 18:41:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:20,391 INFO L471 AbstractCegarLoop]: Abstraction has 52945 states and 65872 transitions. [2024-11-09 18:41:20,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 18:41:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 52945 states and 65872 transitions. [2024-11-09 18:41:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-09 18:41:20,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:20,426 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:20,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:41:20,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:20,631 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:20,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash -773396900, now seen corresponding path program 1 times [2024-11-09 18:41:20,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:20,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133832428] [2024-11-09 18:41:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:20,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 18:41:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:21,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133832428] [2024-11-09 18:41:21,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133832428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:21,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:21,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28348363] [2024-11-09 18:41:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:21,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:21,112 INFO L87 Difference]: Start difference. First operand 52945 states and 65872 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 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 18:41:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:22,192 INFO L93 Difference]: Finished difference Result 105888 states and 131742 transitions. [2024-11-09 18:41:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:22,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 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 272 [2024-11-09 18:41:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:22,281 INFO L225 Difference]: With dead ends: 105888 [2024-11-09 18:41:22,281 INFO L226 Difference]: Without dead ends: 52945 [2024-11-09 18:41:22,317 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 18:41:22,318 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 179 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:22,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 202 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:41:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52945 states. [2024-11-09 18:41:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52945 to 52945. [2024-11-09 18:41:22,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52945 states, 52944 states have (on average 1.1661000302206104) internal successors, (61738), 52944 states have internal predecessors, (61738), 0 states have call successors, (0), 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 18:41:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52945 states to 52945 states and 61738 transitions. [2024-11-09 18:41:22,996 INFO L78 Accepts]: Start accepts. Automaton has 52945 states and 61738 transitions. Word has length 272 [2024-11-09 18:41:22,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:22,997 INFO L471 AbstractCegarLoop]: Abstraction has 52945 states and 61738 transitions. [2024-11-09 18:41:22,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 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 18:41:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 52945 states and 61738 transitions. [2024-11-09 18:41:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-09 18:41:23,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:23,282 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:23,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 18:41:23,283 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:23,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash 88914512, now seen corresponding path program 1 times [2024-11-09 18:41:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:23,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239392241] [2024-11-09 18:41:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 92 proven. 7 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 18:41:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239392241] [2024-11-09 18:41:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239392241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950545495] [2024-11-09 18:41:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:24,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:24,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:24,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:24,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:41:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:24,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:24,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 18:41:24,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:24,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950545495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:24,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:24,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:24,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149653456] [2024-11-09 18:41:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:24,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:24,878 INFO L87 Difference]: Start difference. First operand 52945 states and 61738 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 18:41:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:25,487 INFO L93 Difference]: Finished difference Result 154625 states and 180424 transitions. [2024-11-09 18:41:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:25,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 284 [2024-11-09 18:41:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:25,672 INFO L225 Difference]: With dead ends: 154625 [2024-11-09 18:41:25,672 INFO L226 Difference]: Without dead ends: 101682 [2024-11-09 18:41:25,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:25,745 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 309 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:25,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 882 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:41:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101682 states. [2024-11-09 18:41:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101682 to 100047. [2024-11-09 18:41:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100047 states, 100046 states have (on average 1.14944125702177) internal successors, (114997), 100046 states have internal predecessors, (114997), 0 states have call successors, (0), 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 18:41:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100047 states to 100047 states and 114997 transitions. [2024-11-09 18:41:27,317 INFO L78 Accepts]: Start accepts. Automaton has 100047 states and 114997 transitions. Word has length 284 [2024-11-09 18:41:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:27,318 INFO L471 AbstractCegarLoop]: Abstraction has 100047 states and 114997 transitions. [2024-11-09 18:41:27,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 18:41:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 100047 states and 114997 transitions. [2024-11-09 18:41:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-09 18:41:27,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:27,381 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:27,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:41:27,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:27,582 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:27,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1578632934, now seen corresponding path program 1 times [2024-11-09 18:41:27,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:27,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848158553] [2024-11-09 18:41:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:27,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 96 proven. 7 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 18:41:29,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848158553] [2024-11-09 18:41:29,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848158553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799753562] [2024-11-09 18:41:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:29,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:29,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:29,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:29,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:41:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:29,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:29,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 18:41:29,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:29,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799753562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:29,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:29,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463721887] [2024-11-09 18:41:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:29,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:29,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:29,678 INFO L87 Difference]: Start difference. First operand 100047 states and 114997 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 18:41:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:30,810 INFO L93 Difference]: Finished difference Result 194715 states and 224150 transitions. [2024-11-09 18:41:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:30,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 288 [2024-11-09 18:41:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:30,943 INFO L225 Difference]: With dead ends: 194715 [2024-11-09 18:41:30,944 INFO L226 Difference]: Without dead ends: 94670 [2024-11-09 18:41:30,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:30,986 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 215 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:30,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 393 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:41:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94670 states. [2024-11-09 18:41:32,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94670 to 94539. [2024-11-09 18:41:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94539 states, 94538 states have (on average 1.1455393598341408) internal successors, (108297), 94538 states have internal predecessors, (108297), 0 states have call successors, (0), 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 18:41:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94539 states to 94539 states and 108297 transitions. [2024-11-09 18:41:32,282 INFO L78 Accepts]: Start accepts. Automaton has 94539 states and 108297 transitions. Word has length 288 [2024-11-09 18:41:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:32,283 INFO L471 AbstractCegarLoop]: Abstraction has 94539 states and 108297 transitions. [2024-11-09 18:41:32,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 18:41:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 94539 states and 108297 transitions. [2024-11-09 18:41:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-09 18:41:32,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:32,332 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:32,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:41:32,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:41:32,534 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:32,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash -164932969, now seen corresponding path program 1 times [2024-11-09 18:41:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629471495] [2024-11-09 18:41:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 105 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 18:41:34,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:34,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629471495] [2024-11-09 18:41:34,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629471495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:34,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873830822] [2024-11-09 18:41:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:34,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:34,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:34,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:34,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:41:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:34,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:34,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-09 18:41:34,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:34,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873830822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:34,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:34,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:34,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502501865] [2024-11-09 18:41:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:34,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:34,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:34,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:34,242 INFO L87 Difference]: Start difference. First operand 94539 states and 108297 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 18:41:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:35,429 INFO L93 Difference]: Finished difference Result 216355 states and 249111 transitions. [2024-11-09 18:41:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 291 [2024-11-09 18:41:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:35,595 INFO L225 Difference]: With dead ends: 216355 [2024-11-09 18:41:35,595 INFO L226 Difference]: Without dead ends: 121818 [2024-11-09 18:41:35,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:35,647 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 209 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:35,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 188 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:41:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121818 states. [2024-11-09 18:41:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121818 to 120975. [2024-11-09 18:41:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120975 states, 120974 states have (on average 1.1364590738505795) internal successors, (137482), 120974 states have internal predecessors, (137482), 0 states have call successors, (0), 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 18:41:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120975 states to 120975 states and 137482 transitions. [2024-11-09 18:41:37,619 INFO L78 Accepts]: Start accepts. Automaton has 120975 states and 137482 transitions. Word has length 291 [2024-11-09 18:41:37,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:37,620 INFO L471 AbstractCegarLoop]: Abstraction has 120975 states and 137482 transitions. [2024-11-09 18:41:37,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 18:41:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 120975 states and 137482 transitions. [2024-11-09 18:41:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-09 18:41:37,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:37,685 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:37,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:41:37,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:37,886 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:37,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1436751329, now seen corresponding path program 1 times [2024-11-09 18:41:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752935172] [2024-11-09 18:41:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 109 proven. 7 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 18:41:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752935172] [2024-11-09 18:41:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752935172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398120882] [2024-11-09 18:41:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:39,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:39,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:39,159 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:39,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:41:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:39,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:39,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 18:41:39,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:39,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398120882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:39,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:39,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 18:41:39,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572943424] [2024-11-09 18:41:39,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:39,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:39,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:39,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:39,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:39,384 INFO L87 Difference]: Start difference. First operand 120975 states and 137482 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:40,321 INFO L93 Difference]: Finished difference Result 231758 states and 263851 transitions. [2024-11-09 18:41:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:40,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 295 [2024-11-09 18:41:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:40,448 INFO L225 Difference]: With dead ends: 231758 [2024-11-09 18:41:40,448 INFO L226 Difference]: Without dead ends: 110785 [2024-11-09 18:41:40,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:40,504 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 309 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:40,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 33 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:41:40,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110785 states. [2024-11-09 18:41:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110785 to 110173. [2024-11-09 18:41:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110173 states, 110172 states have (on average 1.1334549613331881) internal successors, (124875), 110172 states have internal predecessors, (124875), 0 states have call successors, (0), 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 18:41:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110173 states to 110173 states and 124875 transitions. [2024-11-09 18:41:41,913 INFO L78 Accepts]: Start accepts. Automaton has 110173 states and 124875 transitions. Word has length 295 [2024-11-09 18:41:41,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:41,914 INFO L471 AbstractCegarLoop]: Abstraction has 110173 states and 124875 transitions. [2024-11-09 18:41:41,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 110173 states and 124875 transitions. [2024-11-09 18:41:42,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-09 18:41:42,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:42,503 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:42,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:41:42,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:42,708 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:42,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 482627777, now seen corresponding path program 1 times [2024-11-09 18:41:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:42,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552249968] [2024-11-09 18:41:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:42,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:43,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:43,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552249968] [2024-11-09 18:41:43,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552249968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:43,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:43,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:43,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546053169] [2024-11-09 18:41:43,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:43,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:41:43,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:43,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:41:43,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:41:43,054 INFO L87 Difference]: Start difference. First operand 110173 states and 124875 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 18:41:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:44,847 INFO L93 Difference]: Finished difference Result 229850 states and 260458 transitions. [2024-11-09 18:41:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:41:44,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2024-11-09 18:41:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:44,981 INFO L225 Difference]: With dead ends: 229850 [2024-11-09 18:41:44,981 INFO L226 Difference]: Without dead ends: 117843 [2024-11-09 18:41:45,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 18:41:45,019 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 352 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:45,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 87 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:41:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117843 states. [2024-11-09 18:41:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117843 to 116933. [2024-11-09 18:41:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116933 states, 116932 states have (on average 1.1183935962781788) internal successors, (130776), 116932 states have internal predecessors, (130776), 0 states have call successors, (0), 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 18:41:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116933 states to 116933 states and 130776 transitions. [2024-11-09 18:41:46,427 INFO L78 Accepts]: Start accepts. Automaton has 116933 states and 130776 transitions. Word has length 320 [2024-11-09 18:41:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:46,427 INFO L471 AbstractCegarLoop]: Abstraction has 116933 states and 130776 transitions. [2024-11-09 18:41:46,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 18:41:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 116933 states and 130776 transitions. [2024-11-09 18:41:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-09 18:41:46,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:46,462 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:46,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 18:41:46,462 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:46,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -490803389, now seen corresponding path program 1 times [2024-11-09 18:41:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999595632] [2024-11-09 18:41:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 99 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-09 18:41:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999595632] [2024-11-09 18:41:47,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999595632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:47,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075670894] [2024-11-09 18:41:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:47,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:47,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:41:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:47,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:47,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 18:41:47,534 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:47,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075670894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:47,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:47,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:41:47,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599743105] [2024-11-09 18:41:47,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:47,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:47,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:47,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:47,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:47,536 INFO L87 Difference]: Start difference. First operand 116933 states and 130776 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 18:41:48,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:48,944 INFO L93 Difference]: Finished difference Result 226483 states and 252838 transitions. [2024-11-09 18:41:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:48,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 334 [2024-11-09 18:41:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:49,085 INFO L225 Difference]: With dead ends: 226483 [2024-11-09 18:41:49,085 INFO L226 Difference]: Without dead ends: 108736 [2024-11-09 18:41:49,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:49,132 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 232 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:49,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 307 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:41:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108736 states. [2024-11-09 18:41:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108736 to 101776. [2024-11-09 18:41:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101776 states, 101775 states have (on average 1.0917219356423482) internal successors, (111110), 101775 states have internal predecessors, (111110), 0 states have call successors, (0), 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 18:41:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101776 states to 101776 states and 111110 transitions. [2024-11-09 18:41:50,717 INFO L78 Accepts]: Start accepts. Automaton has 101776 states and 111110 transitions. Word has length 334 [2024-11-09 18:41:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:50,717 INFO L471 AbstractCegarLoop]: Abstraction has 101776 states and 111110 transitions. [2024-11-09 18:41:50,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 18:41:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 101776 states and 111110 transitions. [2024-11-09 18:41:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-09 18:41:50,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:50,763 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:50,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:41:50,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 18:41:50,964 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:50,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2134640591, now seen corresponding path program 1 times [2024-11-09 18:41:50,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:50,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340222117] [2024-11-09 18:41:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:50,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 112 proven. 7 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 18:41:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340222117] [2024-11-09 18:41:51,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340222117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920385373] [2024-11-09 18:41:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:51,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:51,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:51,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:41:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:51,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:41:51,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 18:41:51,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920385373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:51,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:51,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:41:51,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62423553] [2024-11-09 18:41:51,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:51,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:51,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:51,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:51,988 INFO L87 Difference]: Start difference. First operand 101776 states and 111110 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:52,686 INFO L93 Difference]: Finished difference Result 203546 states and 222214 transitions. [2024-11-09 18:41:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:52,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2024-11-09 18:41:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:52,810 INFO L225 Difference]: With dead ends: 203546 [2024-11-09 18:41:52,810 INFO L226 Difference]: Without dead ends: 101772 [2024-11-09 18:41:52,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:52,875 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 276 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:52,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 31 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:41:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101772 states. [2024-11-09 18:41:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101772 to 101770. [2024-11-09 18:41:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101770 states, 101769 states have (on average 1.0916880385972152) internal successors, (111100), 101769 states have internal predecessors, (111100), 0 states have call successors, (0), 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 18:41:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101770 states to 101770 states and 111100 transitions. [2024-11-09 18:41:54,260 INFO L78 Accepts]: Start accepts. Automaton has 101770 states and 111100 transitions. Word has length 345 [2024-11-09 18:41:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:54,261 INFO L471 AbstractCegarLoop]: Abstraction has 101770 states and 111100 transitions. [2024-11-09 18:41:54,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:41:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 101770 states and 111100 transitions. [2024-11-09 18:41:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-09 18:41:54,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:54,294 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:54,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:41:54,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 18:41:54,495 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:54,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash -36149842, now seen corresponding path program 1 times [2024-11-09 18:41:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:54,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453957294] [2024-11-09 18:41:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:54,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat