./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label04.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 dfc7a2daf16de8ab0ea0e11c62b30033c40981748d5071b1cd9dbc5bcc0c3347 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 20:18:49,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 20:18:49,089 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 20:18:49,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 20:18:49,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 20:18:49,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 20:18:49,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 20:18:49,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 20:18:49,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 20:18:49,109 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 20:18:49,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 20:18:49,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 20:18:49,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 20:18:49,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 20:18:49,111 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 20:18:49,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 20:18:49,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 20:18:49,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 20:18:49,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 20:18:49,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 20:18:49,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 20:18:49,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 20:18:49,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 20:18:49,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 20:18:49,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 20:18:49,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 20:18:49,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 20:18:49,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 20:18:49,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 20:18:49,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 20:18:49,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 20:18:49,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 20:18:49,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:18:49,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 20:18:49,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 20:18:49,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 20:18:49,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 20:18:49,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 20:18:49,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 20:18:49,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 20:18:49,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 20:18:49,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 20:18:49,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfc7a2daf16de8ab0ea0e11c62b30033c40981748d5071b1cd9dbc5bcc0c3347 [2024-10-23 20:18:49,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 20:18:49,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 20:18:49,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 20:18:49,312 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 20:18:49,313 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 20:18:49,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2024-10-23 20:18:50,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 20:18:50,913 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 20:18:50,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2024-10-23 20:18:50,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab66664a9/6667e1d4a7da46deb9838d4602e99727/FLAGf61b46cfb [2024-10-23 20:18:50,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab66664a9/6667e1d4a7da46deb9838d4602e99727 [2024-10-23 20:18:50,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 20:18:50,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 20:18:50,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 20:18:50,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 20:18:50,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 20:18:50,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:18:50" (1/1) ... [2024-10-23 20:18:50,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fc37d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:50, skipping insertion in model container [2024-10-23 20:18:50,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:18:50" (1/1) ... [2024-10-23 20:18:50,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 20:18:51,232 WARN L248 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/Problem02_label04.c[17470,17483] [2024-10-23 20:18:51,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:18:51,281 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 20:18:51,373 WARN L248 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/Problem02_label04.c[17470,17483] [2024-10-23 20:18:51,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 20:18:51,407 INFO L204 MainTranslator]: Completed translation [2024-10-23 20:18:51,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51 WrapperNode [2024-10-23 20:18:51,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 20:18:51,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 20:18:51,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 20:18:51,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 20:18:51,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,492 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2024-10-23 20:18:51,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 20:18:51,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 20:18:51,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 20:18:51,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 20:18:51,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,535 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]. [2024-10-23 20:18:51,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 20:18:51,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 20:18:51,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 20:18:51,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 20:18:51,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (1/1) ... [2024-10-23 20:18:51,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 20:18:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:18:51,619 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) [2024-10-23 20:18:51,621 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 [2024-10-23 20:18:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 20:18:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 20:18:51,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 20:18:51,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 20:18:51,722 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 20:18:51,724 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 20:18:52,493 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-10-23 20:18:52,493 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 20:18:52,551 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 20:18:52,551 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 20:18:52,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:52 BoogieIcfgContainer [2024-10-23 20:18:52,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 20:18:52,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 20:18:52,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 20:18:52,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 20:18:52,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:18:50" (1/3) ... [2024-10-23 20:18:52,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a9e41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:18:52, skipping insertion in model container [2024-10-23 20:18:52,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:18:51" (2/3) ... [2024-10-23 20:18:52,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a9e41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:18:52, skipping insertion in model container [2024-10-23 20:18:52,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:52" (3/3) ... [2024-10-23 20:18:52,560 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2024-10-23 20:18:52,575 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 20:18:52,575 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 20:18:52,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 20:18:52,635 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;@428e7fa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 20:18:52,636 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 20:18:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-23 20:18:52,649 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:52,650 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] [2024-10-23 20:18:52,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:52,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:52,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1583578648, now seen corresponding path program 1 times [2024-10-23 20:18:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:52,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732573398] [2024-10-23 20:18:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732573398] [2024-10-23 20:18:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732573398] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:52,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385394471] [2024-10-23 20:18:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:52,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 20:18:52,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:53,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 20:18:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:18:53,020 INFO L87 Difference]: Start difference. First operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:53,078 INFO L93 Difference]: Finished difference Result 329 states and 625 transitions. [2024-10-23 20:18:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 20:18:53,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2024-10-23 20:18:53,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:53,136 INFO L225 Difference]: With dead ends: 329 [2024-10-23 20:18:53,141 INFO L226 Difference]: Without dead ends: 163 [2024-10-23 20:18:53,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 20:18:53,151 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:53,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 20:18:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-23 20:18:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-10-23 20:18:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 162 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:53,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2024-10-23 20:18:53,263 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 105 [2024-10-23 20:18:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:53,263 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2024-10-23 20:18:53,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2024-10-23 20:18:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-23 20:18:53,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:53,268 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] [2024-10-23 20:18:53,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 20:18:53,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:53,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash -392867995, now seen corresponding path program 1 times [2024-10-23 20:18:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:53,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629478606] [2024-10-23 20:18:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629478606] [2024-10-23 20:18:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629478606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:53,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:53,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664382302] [2024-10-23 20:18:53,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:53,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:53,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:53,588 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:54,104 INFO L93 Difference]: Finished difference Result 470 states and 719 transitions. [2024-10-23 20:18:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:54,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2024-10-23 20:18:54,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:54,106 INFO L225 Difference]: With dead ends: 470 [2024-10-23 20:18:54,106 INFO L226 Difference]: Without dead ends: 308 [2024-10-23 20:18:54,107 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 [2024-10-23 20:18:54,108 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 44 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:54,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 116 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 20:18:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-23 20:18:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2024-10-23 20:18:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.3311475409836067) internal successors, (406), 305 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 406 transitions. [2024-10-23 20:18:54,130 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 406 transitions. Word has length 105 [2024-10-23 20:18:54,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:54,131 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 406 transitions. [2024-10-23 20:18:54,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:54,131 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 406 transitions. [2024-10-23 20:18:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-23 20:18:54,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:54,136 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-23 20:18:54,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 20:18:54,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:54,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash 770218816, now seen corresponding path program 1 times [2024-10-23 20:18:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136630396] [2024-10-23 20:18:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:54,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:54,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136630396] [2024-10-23 20:18:54,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136630396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:54,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:54,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:18:54,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044978972] [2024-10-23 20:18:54,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:54,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:54,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:54,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:54,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:54,317 INFO L87 Difference]: Start difference. First operand 306 states and 406 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:54,782 INFO L93 Difference]: Finished difference Result 757 states and 1033 transitions. [2024-10-23 20:18:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:54,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-10-23 20:18:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:54,785 INFO L225 Difference]: With dead ends: 757 [2024-10-23 20:18:54,785 INFO L226 Difference]: Without dead ends: 452 [2024-10-23 20:18:54,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:54,787 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 58 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:54,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 245 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 20:18:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-10-23 20:18:54,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2024-10-23 20:18:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.2793791574279378) internal successors, (577), 451 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 577 transitions. [2024-10-23 20:18:54,804 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 577 transitions. Word has length 110 [2024-10-23 20:18:54,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:54,805 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 577 transitions. [2024-10-23 20:18:54,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 577 transitions. [2024-10-23 20:18:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-23 20:18:54,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:54,807 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] [2024-10-23 20:18:54,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 20:18:54,807 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:54,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash -652785723, now seen corresponding path program 1 times [2024-10-23 20:18:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162686327] [2024-10-23 20:18:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:54,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162686327] [2024-10-23 20:18:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162686327] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:54,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:54,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:54,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403544793] [2024-10-23 20:18:54,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:54,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:54,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:54,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:54,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:54,868 INFO L87 Difference]: Start difference. First operand 452 states and 577 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:55,190 INFO L93 Difference]: Finished difference Result 1324 states and 1690 transitions. [2024-10-23 20:18:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:55,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2024-10-23 20:18:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:55,193 INFO L225 Difference]: With dead ends: 1324 [2024-10-23 20:18:55,193 INFO L226 Difference]: Without dead ends: 873 [2024-10-23 20:18:55,194 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 [2024-10-23 20:18:55,195 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 185 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:55,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 77 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-10-23 20:18:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2024-10-23 20:18:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.2305045871559632) internal successors, (1073), 872 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1073 transitions. [2024-10-23 20:18:55,212 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1073 transitions. Word has length 122 [2024-10-23 20:18:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:55,212 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1073 transitions. [2024-10-23 20:18:55,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1073 transitions. [2024-10-23 20:18:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-23 20:18:55,214 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:55,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:55,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 20:18:55,215 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:55,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:55,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1902855112, now seen corresponding path program 1 times [2024-10-23 20:18:55,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:55,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372810504] [2024-10-23 20:18:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:55,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372810504] [2024-10-23 20:18:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372810504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:55,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:18:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991965483] [2024-10-23 20:18:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:55,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:55,339 INFO L87 Difference]: Start difference. First operand 873 states and 1073 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:55,664 INFO L93 Difference]: Finished difference Result 2593 states and 3191 transitions. [2024-10-23 20:18:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2024-10-23 20:18:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:55,670 INFO L225 Difference]: With dead ends: 2593 [2024-10-23 20:18:55,670 INFO L226 Difference]: Without dead ends: 1721 [2024-10-23 20:18:55,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:55,673 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 57 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:55,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 287 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-10-23 20:18:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1715. [2024-10-23 20:18:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 1.1901983663943991) internal successors, (2040), 1714 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2040 transitions. [2024-10-23 20:18:55,722 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2040 transitions. Word has length 135 [2024-10-23 20:18:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:55,723 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2040 transitions. [2024-10-23 20:18:55,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2040 transitions. [2024-10-23 20:18:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-23 20:18:55,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:55,725 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-10-23 20:18:55,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 20:18:55,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:55,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:55,726 INFO L85 PathProgramCache]: Analyzing trace with hash 637366008, now seen corresponding path program 1 times [2024-10-23 20:18:55,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:55,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674489802] [2024-10-23 20:18:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-23 20:18:55,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674489802] [2024-10-23 20:18:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674489802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:55,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:18:55,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420524283] [2024-10-23 20:18:55,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:55,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:55,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:55,796 INFO L87 Difference]: Start difference. First operand 1715 states and 2040 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:56,111 INFO L93 Difference]: Finished difference Result 3851 states and 4553 transitions. [2024-10-23 20:18:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:56,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 151 [2024-10-23 20:18:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:56,116 INFO L225 Difference]: With dead ends: 3851 [2024-10-23 20:18:56,116 INFO L226 Difference]: Without dead ends: 1855 [2024-10-23 20:18:56,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:56,118 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:56,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 64 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2024-10-23 20:18:56,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1853. [2024-10-23 20:18:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 1.1198704103671706) internal successors, (2074), 1852 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2074 transitions. [2024-10-23 20:18:56,140 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2074 transitions. Word has length 151 [2024-10-23 20:18:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:56,140 INFO L471 AbstractCegarLoop]: Abstraction has 1853 states and 2074 transitions. [2024-10-23 20:18:56,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2074 transitions. [2024-10-23 20:18:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-23 20:18:56,142 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:56,142 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:56,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 20:18:56,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:56,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:56,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1356132688, now seen corresponding path program 1 times [2024-10-23 20:18:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:56,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896234504] [2024-10-23 20:18:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896234504] [2024-10-23 20:18:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896234504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:56,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:56,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 20:18:56,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073670021] [2024-10-23 20:18:56,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:56,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:56,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:56,218 INFO L87 Difference]: Start difference. First operand 1853 states and 2074 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:56,554 INFO L93 Difference]: Finished difference Result 4403 states and 4919 transitions. [2024-10-23 20:18:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:56,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-10-23 20:18:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:56,561 INFO L225 Difference]: With dead ends: 4403 [2024-10-23 20:18:56,561 INFO L226 Difference]: Without dead ends: 2411 [2024-10-23 20:18:56,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:56,565 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 73 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:56,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 68 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 20:18:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2024-10-23 20:18:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2271. [2024-10-23 20:18:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2270 states have (on average 1.0951541850220263) internal successors, (2486), 2270 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2486 transitions. [2024-10-23 20:18:56,600 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2486 transitions. Word has length 152 [2024-10-23 20:18:56,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:56,601 INFO L471 AbstractCegarLoop]: Abstraction has 2271 states and 2486 transitions. [2024-10-23 20:18:56,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2486 transitions. [2024-10-23 20:18:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-23 20:18:56,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:56,604 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:56,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 20:18:56,604 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:56,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:56,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2089620679, now seen corresponding path program 1 times [2024-10-23 20:18:56,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:56,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124938468] [2024-10-23 20:18:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-23 20:18:56,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:56,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124938468] [2024-10-23 20:18:56,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124938468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:56,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 20:18:56,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 20:18:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703827973] [2024-10-23 20:18:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:56,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 20:18:56,760 INFO L87 Difference]: Start difference. First operand 2271 states and 2486 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:56,937 INFO L93 Difference]: Finished difference Result 4247 states and 4653 transitions. [2024-10-23 20:18:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:56,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 164 [2024-10-23 20:18:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:56,942 INFO L225 Difference]: With dead ends: 4247 [2024-10-23 20:18:56,942 INFO L226 Difference]: Without dead ends: 1835 [2024-10-23 20:18:56,945 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 [2024-10-23 20:18:56,946 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:56,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 16 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 20:18:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2024-10-23 20:18:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1555. [2024-10-23 20:18:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 1.0772200772200773) internal successors, (1674), 1554 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 1674 transitions. [2024-10-23 20:18:56,973 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 1674 transitions. Word has length 164 [2024-10-23 20:18:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:56,974 INFO L471 AbstractCegarLoop]: Abstraction has 1555 states and 1674 transitions. [2024-10-23 20:18:56,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 1674 transitions. [2024-10-23 20:18:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-23 20:18:56,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 20:18:56,977 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:56,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 20:18:56,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 20:18:56,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 20:18:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1614106237, now seen corresponding path program 1 times [2024-10-23 20:18:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 20:18:56,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407643044] [2024-10-23 20:18:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 20:18:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 20:18:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 20:18:57,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407643044] [2024-10-23 20:18:57,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407643044] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 20:18:57,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063154785] [2024-10-23 20:18:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 20:18:57,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:18:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 20:18:57,309 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) [2024-10-23 20:18:57,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 20:18:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 20:18:57,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 20:18:57,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 20:18:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 20:18:57,622 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 20:18:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063154785] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 20:18:57,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 20:18:57,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-23 20:18:57,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62708322] [2024-10-23 20:18:57,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 20:18:57,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 20:18:57,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 20:18:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 20:18:57,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:18:57,625 INFO L87 Difference]: Start difference. First operand 1555 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 20:18:57,889 INFO L93 Difference]: Finished difference Result 2966 states and 3201 transitions. [2024-10-23 20:18:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 20:18:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 179 [2024-10-23 20:18:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 20:18:57,890 INFO L225 Difference]: With dead ends: 2966 [2024-10-23 20:18:57,890 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 20:18:57,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-23 20:18:57,893 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 67 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 20:18:57,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 25 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 20:18:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 20:18:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 20:18:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 20:18:57,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2024-10-23 20:18:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 20:18:57,894 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 20:18:57,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 20:18:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 20:18:57,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 20:18:57,896 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 20:18:57,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 20:18:58,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 20:18:58,100 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 20:18:58,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 20:18:58,209 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 20:18:58,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:18:58 BoogieIcfgContainer [2024-10-23 20:18:58,225 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 20:18:58,225 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 20:18:58,225 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 20:18:58,225 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 20:18:58,226 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:18:52" (3/4) ... [2024-10-23 20:18:58,227 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 20:18:58,240 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 20:18:58,245 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 20:18:58,245 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 20:18:58,246 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 20:18:58,385 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 20:18:58,385 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 20:18:58,385 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 20:18:58,386 INFO L158 Benchmark]: Toolchain (without parser) took 7439.64ms. Allocated memory was 167.8MB in the beginning and 446.7MB in the end (delta: 278.9MB). Free memory was 92.2MB in the beginning and 237.4MB in the end (delta: -145.2MB). Peak memory consumption was 135.9MB. Max. memory is 16.1GB. [2024-10-23 20:18:58,386 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 20:18:58,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.89ms. Allocated memory was 167.8MB in the beginning and 304.1MB in the end (delta: 136.3MB). Free memory was 92.1MB in the beginning and 266.9MB in the end (delta: -174.9MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2024-10-23 20:18:58,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.25ms. Allocated memory is still 304.1MB. Free memory was 266.9MB in the beginning and 260.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-23 20:18:58,387 INFO L158 Benchmark]: Boogie Preprocessor took 93.28ms. Allocated memory is still 304.1MB. Free memory was 260.7MB in the beginning and 255.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-23 20:18:58,387 INFO L158 Benchmark]: RCFGBuilder took 964.21ms. Allocated memory is still 304.1MB. Free memory was 255.4MB in the beginning and 168.4MB in the end (delta: 87.0MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2024-10-23 20:18:58,387 INFO L158 Benchmark]: TraceAbstraction took 5671.62ms. Allocated memory was 304.1MB in the beginning and 446.7MB in the end (delta: 142.6MB). Free memory was 167.3MB in the beginning and 250.0MB in the end (delta: -82.7MB). Peak memory consumption was 61.0MB. Max. memory is 16.1GB. [2024-10-23 20:18:58,388 INFO L158 Benchmark]: Witness Printer took 160.36ms. Allocated memory is still 446.7MB. Free memory was 250.0MB in the beginning and 237.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-23 20:18:58,389 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.89ms. Allocated memory was 167.8MB in the beginning and 304.1MB in the end (delta: 136.3MB). Free memory was 92.1MB in the beginning and 266.9MB in the end (delta: -174.9MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.25ms. Allocated memory is still 304.1MB. Free memory was 266.9MB in the beginning and 260.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.28ms. Allocated memory is still 304.1MB. Free memory was 260.7MB in the beginning and 255.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 964.21ms. Allocated memory is still 304.1MB. Free memory was 255.4MB in the beginning and 168.4MB in the end (delta: 87.0MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5671.62ms. Allocated memory was 304.1MB in the beginning and 446.7MB in the end (delta: 142.6MB). Free memory was 167.3MB in the beginning and 250.0MB in the end (delta: -82.7MB). Peak memory consumption was 61.0MB. Max. memory is 16.1GB. * Witness Printer took 160.36ms. Allocated memory is still 446.7MB. Free memory was 250.0MB in the beginning and 237.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 500]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 165 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 795 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 795 mSDsluCounter, 1146 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 500 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2613 IncrementalHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 500 mSolverCounterUnsat, 1050 mSDtfsCounter, 2613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2271occurred in iteration=7, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 430 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1402 NumberOfCodeBlocks, 1402 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1392 ConstructedInterpolants, 0 QuantifiedInterpolants, 5187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 301 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 394/410 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((a17 == 8) && (a28 <= 7)) || ((a28 == 10) && (a17 <= 8))) || ((((a17 == 8) && (a25 == 1)) && (a19 == 1)) && (a11 != 1))) || ((a28 == 10) && (a19 == 1))) || (((a17 == 8) && (a28 <= 10)) && (a19 == 1))) || (((a25 == 1) && (a17 <= 8)) && (a28 <= 10))) || (((a17 == 8) && (a28 <= 10)) && (a11 != 1))) || ((((a25 == 1) && (a19 == 1)) && (a11 != 1)) && (a28 <= 7))) RESULT: Ultimate proved your program to be correct! [2024-10-23 20:18:58,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE