./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label40.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 1b17bd6617b50b0e6831a01559eff532c2b524038422e13bfffb34a9c9ec0110 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:51:45,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:51:45,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:51:45,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:51:45,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:51:45,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:51:45,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:51:45,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:51:45,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:51:45,749 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:51:45,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:51:45,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:51:45,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:51:45,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:51:45,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:51:45,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:51:45,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:51:45,752 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:51:45,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:51:45,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:51:45,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:51:45,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:51:45,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:51:45,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:51:45,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:51:45,755 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:51:45,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:51:45,756 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:51:45,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:51:45,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:51:45,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:51:45,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:51:45,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:51:45,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:51:45,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:51:45,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:51:45,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:51:45,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:51:45,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:51:45,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:51:45,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:51:45,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:51:45,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b17bd6617b50b0e6831a01559eff532c2b524038422e13bfffb34a9c9ec0110 [2024-11-18 10:51:45,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:51:45,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:51:45,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:51:45,972 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:51:45,972 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:51:45,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label40.c [2024-11-18 10:51:47,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:51:47,685 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:51:47,686 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label40.c [2024-11-18 10:51:47,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/987c4c8a4/bc967f30d1d64f529a962a0efa6825d3/FLAG5d793b5fc [2024-11-18 10:51:47,716 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/987c4c8a4/bc967f30d1d64f529a962a0efa6825d3 [2024-11-18 10:51:47,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:51:47,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:51:47,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:51:47,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:51:47,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:51:47,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:51:47" (1/1) ... [2024-11-18 10:51:47,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dba762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:47, skipping insertion in model container [2024-11-18 10:51:47,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:51:47" (1/1) ... [2024-11-18 10:51:47,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:51:47,984 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label40.c[3467,3480] [2024-11-18 10:51:48,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:51:48,401 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:51:48,418 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label40.c[3467,3480] [2024-11-18 10:51:48,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:51:48,666 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:51:48,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48 WrapperNode [2024-11-18 10:51:48,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:51:48,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:51:48,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:51:48,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:51:48,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:48,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:48,976 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:51:48,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:51:48,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:51:48,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:51:48,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:51:48,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:48,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,198 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 10:51:49,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:51:49,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:51:49,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:51:49,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:51:49,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (1/1) ... [2024-11-18 10:51:49,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:51:49,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:49,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 10:51:49,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 10:51:49,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:51:49,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:51:49,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:51:49,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:51:49,538 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:51:49,540 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:51:52,049 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:51:52,049 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:51:52,073 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:51:52,074 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:51:52,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:51:52 BoogieIcfgContainer [2024-11-18 10:51:52,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:51:52,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:51:52,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:51:52,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:51:52,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:51:47" (1/3) ... [2024-11-18 10:51:52,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b370c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:51:52, skipping insertion in model container [2024-11-18 10:51:52,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:51:48" (2/3) ... [2024-11-18 10:51:52,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b370c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:51:52, skipping insertion in model container [2024-11-18 10:51:52,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:51:52" (3/3) ... [2024-11-18 10:51:52,083 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label40.c [2024-11-18 10:51:52,098 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:51:52,098 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:51:52,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:51:52,178 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;@c116e2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:51:52,179 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:51:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 10:51:52,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:52,193 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] [2024-11-18 10:51:52,194 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:52,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1644072970, now seen corresponding path program 1 times [2024-11-18 10:51:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:52,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993514189] [2024-11-18 10:51:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:52,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:52,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993514189] [2024-11-18 10:51:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993514189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:52,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:51:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489470180] [2024-11-18 10:51:52,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:52,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:52,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:52,478 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:54,563 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-18 10:51:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:54,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-18 10:51:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:54,579 INFO L225 Difference]: With dead ends: 1642 [2024-11-18 10:51:54,579 INFO L226 Difference]: Without dead ends: 975 [2024-11-18 10:51:54,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:54,586 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 468 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:54,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:51:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-18 10:51:54,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-18 10:51:54,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-18 10:51:54,664 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 22 [2024-11-18 10:51:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:54,664 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-18 10:51:54,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-18 10:51:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-18 10:51:54,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:54,668 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:54,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:51:54,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:54,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -757111722, now seen corresponding path program 1 times [2024-11-18 10:51:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:54,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569864781] [2024-11-18 10:51:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:54,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:54,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569864781] [2024-11-18 10:51:54,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569864781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:54,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:54,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3512957] [2024-11-18 10:51:54,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:54,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:54,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:54,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:54,915 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:56,794 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2024-11-18 10:51:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:56,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-18 10:51:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:56,801 INFO L225 Difference]: With dead ends: 2814 [2024-11-18 10:51:56,801 INFO L226 Difference]: Without dead ends: 1844 [2024-11-18 10:51:56,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:56,804 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 469 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:56,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:51:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-18 10:51:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2024-11-18 10:51:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:56,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2024-11-18 10:51:56,849 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 92 [2024-11-18 10:51:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:56,850 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2024-11-18 10:51:56,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:56,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2024-11-18 10:51:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 10:51:56,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:56,853 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:51:56,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:51:56,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:56,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash 636022265, now seen corresponding path program 1 times [2024-11-18 10:51:56,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:56,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031078105] [2024-11-18 10:51:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:56,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031078105] [2024-11-18 10:51:57,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031078105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:57,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:57,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:51:57,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101667601] [2024-11-18 10:51:57,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:57,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:57,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:57,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:57,037 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:58,636 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2024-11-18 10:51:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:51:58,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-11-18 10:51:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:58,644 INFO L225 Difference]: With dead ends: 5395 [2024-11-18 10:51:58,644 INFO L226 Difference]: Without dead ends: 2701 [2024-11-18 10:51:58,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:58,649 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:58,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:51:58,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-18 10:51:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2024-11-18 10:51:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2024-11-18 10:51:58,687 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 114 [2024-11-18 10:51:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:58,689 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2024-11-18 10:51:58,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:51:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2024-11-18 10:51:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 10:51:58,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:58,695 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:51:58,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:51:58,696 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:58,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1392166931, now seen corresponding path program 1 times [2024-11-18 10:51:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139652095] [2024-11-18 10:51:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:51:58,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:58,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139652095] [2024-11-18 10:51:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139652095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:51:58,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:51:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:51:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513853156] [2024-11-18 10:51:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:51:58,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:51:58,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:51:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:51:58,907 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:00,326 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2024-11-18 10:52:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:00,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2024-11-18 10:52:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:00,343 INFO L225 Difference]: With dead ends: 7108 [2024-11-18 10:52:00,343 INFO L226 Difference]: Without dead ends: 4409 [2024-11-18 10:52:00,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:00,348 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:00,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:52:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-18 10:52:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2024-11-18 10:52:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2024-11-18 10:52:00,416 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 174 [2024-11-18 10:52:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:00,418 INFO L471 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2024-11-18 10:52:00,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2024-11-18 10:52:00,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 10:52:00,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:00,423 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:00,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:52:00,424 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:00,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1553925160, now seen corresponding path program 1 times [2024-11-18 10:52:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:00,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863101653] [2024-11-18 10:52:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:00,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:52:00,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:00,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863101653] [2024-11-18 10:52:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863101653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:00,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:00,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:00,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977599431] [2024-11-18 10:52:00,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:00,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:00,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:00,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:00,553 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:01,841 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2024-11-18 10:52:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 176 [2024-11-18 10:52:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:01,857 INFO L225 Difference]: With dead ends: 10936 [2024-11-18 10:52:01,857 INFO L226 Difference]: Without dead ends: 6528 [2024-11-18 10:52:01,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:01,866 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 429 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:01,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:52:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-18 10:52:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2024-11-18 10:52:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:01,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2024-11-18 10:52:01,938 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 176 [2024-11-18 10:52:01,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:01,939 INFO L471 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2024-11-18 10:52:01,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2024-11-18 10:52:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-18 10:52:01,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:01,941 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:01,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:52:01,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:01,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1348827026, now seen corresponding path program 1 times [2024-11-18 10:52:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:01,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31618173] [2024-11-18 10:52:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:52:02,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:02,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31618173] [2024-11-18 10:52:02,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31618173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:02,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:02,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:02,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682445647] [2024-11-18 10:52:02,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:02,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:02,179 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:03,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:03,451 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2024-11-18 10:52:03,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:03,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 242 [2024-11-18 10:52:03,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:03,464 INFO L225 Difference]: With dead ends: 10045 [2024-11-18 10:52:03,464 INFO L226 Difference]: Without dead ends: 5665 [2024-11-18 10:52:03,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:03,469 INFO L432 NwaCegarLoop]: 833 mSDtfsCounter, 414 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:03,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:52:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2024-11-18 10:52:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2024-11-18 10:52:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2024-11-18 10:52:03,541 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 242 [2024-11-18 10:52:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:03,542 INFO L471 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2024-11-18 10:52:03,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2024-11-18 10:52:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-18 10:52:03,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:03,544 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:03,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:52:03,546 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:03,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1874181909, now seen corresponding path program 1 times [2024-11-18 10:52:03,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:03,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307853699] [2024-11-18 10:52:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:03,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 10:52:03,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:03,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307853699] [2024-11-18 10:52:03,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307853699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:03,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073363618] [2024-11-18 10:52:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:03,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:03,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:03,708 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:04,965 INFO L93 Difference]: Finished difference Result 12593 states and 14783 transitions. [2024-11-18 10:52:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 254 [2024-11-18 10:52:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:04,981 INFO L225 Difference]: With dead ends: 12593 [2024-11-18 10:52:04,981 INFO L226 Difference]: Without dead ends: 6936 [2024-11-18 10:52:04,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:04,990 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:04,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:52:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2024-11-18 10:52:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6936. [2024-11-18 10:52:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6935 states have (on average 1.1322278298485942) internal successors, (7852), 6935 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 7852 transitions. [2024-11-18 10:52:05,081 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 7852 transitions. Word has length 254 [2024-11-18 10:52:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:05,082 INFO L471 AbstractCegarLoop]: Abstraction has 6936 states and 7852 transitions. [2024-11-18 10:52:05,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 7852 transitions. [2024-11-18 10:52:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-18 10:52:05,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:05,085 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:05,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:52:05,085 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:05,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash -503021234, now seen corresponding path program 1 times [2024-11-18 10:52:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214531125] [2024-11-18 10:52:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:05,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214531125] [2024-11-18 10:52:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214531125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:05,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:52:05,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469212447] [2024-11-18 10:52:05,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:05,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:52:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:52:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:05,531 INFO L87 Difference]: Start difference. First operand 6936 states and 7852 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:07,793 INFO L93 Difference]: Finished difference Result 21980 states and 24837 transitions. [2024-11-18 10:52:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 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 294 [2024-11-18 10:52:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:07,822 INFO L225 Difference]: With dead ends: 21980 [2024-11-18 10:52:07,823 INFO L226 Difference]: Without dead ends: 15046 [2024-11-18 10:52:07,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:07,834 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 829 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:07,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 215 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:52:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15046 states. [2024-11-18 10:52:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15046 to 13337. [2024-11-18 10:52:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13337 states, 13336 states have (on average 1.1339232153569285) internal successors, (15122), 13336 states have internal predecessors, (15122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13337 states to 13337 states and 15122 transitions. [2024-11-18 10:52:07,994 INFO L78 Accepts]: Start accepts. Automaton has 13337 states and 15122 transitions. Word has length 294 [2024-11-18 10:52:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:07,995 INFO L471 AbstractCegarLoop]: Abstraction has 13337 states and 15122 transitions. [2024-11-18 10:52:07,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 13337 states and 15122 transitions. [2024-11-18 10:52:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-18 10:52:07,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:07,998 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:07,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:52:07,999 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:07,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1792604717, now seen corresponding path program 1 times [2024-11-18 10:52:07,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:08,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145221282] [2024-11-18 10:52:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:52:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145221282] [2024-11-18 10:52:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145221282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:08,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:08,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:08,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865217522] [2024-11-18 10:52:08,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:08,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:08,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:08,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:08,383 INFO L87 Difference]: Start difference. First operand 13337 states and 15122 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:09,992 INFO L93 Difference]: Finished difference Result 35223 states and 39901 transitions. [2024-11-18 10:52:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 311 [2024-11-18 10:52:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:10,023 INFO L225 Difference]: With dead ends: 35223 [2024-11-18 10:52:10,024 INFO L226 Difference]: Without dead ends: 21888 [2024-11-18 10:52:10,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:10,038 INFO L432 NwaCegarLoop]: 768 mSDtfsCounter, 479 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:10,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 820 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:52:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21888 states. [2024-11-18 10:52:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21888 to 21015. [2024-11-18 10:52:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21015 states, 21014 states have (on average 1.117493099838203) internal successors, (23483), 21014 states have internal predecessors, (23483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:10,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21015 states to 21015 states and 23483 transitions. [2024-11-18 10:52:10,267 INFO L78 Accepts]: Start accepts. Automaton has 21015 states and 23483 transitions. Word has length 311 [2024-11-18 10:52:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:10,267 INFO L471 AbstractCegarLoop]: Abstraction has 21015 states and 23483 transitions. [2024-11-18 10:52:10,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 21015 states and 23483 transitions. [2024-11-18 10:52:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-18 10:52:10,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:10,273 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:10,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:52:10,273 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:10,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1319552185, now seen corresponding path program 1 times [2024-11-18 10:52:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:10,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616888392] [2024-11-18 10:52:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 10:52:10,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:10,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616888392] [2024-11-18 10:52:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616888392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:10,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:10,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:52:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892203736] [2024-11-18 10:52:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:10,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:10,520 INFO L87 Difference]: Start difference. First operand 21015 states and 23483 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:11,328 INFO L93 Difference]: Finished difference Result 42013 states and 46949 transitions. [2024-11-18 10:52:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2024-11-18 10:52:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:11,352 INFO L225 Difference]: With dead ends: 42013 [2024-11-18 10:52:11,352 INFO L226 Difference]: Without dead ends: 21000 [2024-11-18 10:52:11,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:11,371 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:11,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 122 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:52:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21000 states. [2024-11-18 10:52:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21000 to 20995. [2024-11-18 10:52:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20995 states, 20994 states have (on average 1.1166523768695817) internal successors, (23443), 20994 states have internal predecessors, (23443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20995 states to 20995 states and 23443 transitions. [2024-11-18 10:52:11,558 INFO L78 Accepts]: Start accepts. Automaton has 20995 states and 23443 transitions. Word has length 320 [2024-11-18 10:52:11,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:11,559 INFO L471 AbstractCegarLoop]: Abstraction has 20995 states and 23443 transitions. [2024-11-18 10:52:11,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:11,559 INFO L276 IsEmpty]: Start isEmpty. Operand 20995 states and 23443 transitions. [2024-11-18 10:52:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-18 10:52:11,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:11,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:11,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:52:11,564 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:11,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1561363668, now seen corresponding path program 1 times [2024-11-18 10:52:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:11,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746573576] [2024-11-18 10:52:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 223 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:12,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:12,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746573576] [2024-11-18 10:52:12,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746573576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:12,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115625220] [2024-11-18 10:52:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:12,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:12,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:12,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:52:12,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:52:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:12,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 10:52:12,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:52:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 59 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:12,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:52:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:52:12,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115625220] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:12,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:52:12,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-11-18 10:52:12,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610538570] [2024-11-18 10:52:12,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:12,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:52:12,941 INFO L87 Difference]: Start difference. First operand 20995 states and 23443 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:14,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:14,574 INFO L93 Difference]: Finished difference Result 47094 states and 52963 transitions. [2024-11-18 10:52:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 337 [2024-11-18 10:52:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:14,604 INFO L225 Difference]: With dead ends: 47094 [2024-11-18 10:52:14,605 INFO L226 Difference]: Without dead ends: 25237 [2024-11-18 10:52:14,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 670 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:52:14,619 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 413 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:14,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 723 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:52:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25237 states. [2024-11-18 10:52:14,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25237 to 25234. [2024-11-18 10:52:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25234 states, 25233 states have (on average 1.1082709150715333) internal successors, (27965), 25233 states have internal predecessors, (27965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25234 states to 25234 states and 27965 transitions. [2024-11-18 10:52:14,870 INFO L78 Accepts]: Start accepts. Automaton has 25234 states and 27965 transitions. Word has length 337 [2024-11-18 10:52:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:14,870 INFO L471 AbstractCegarLoop]: Abstraction has 25234 states and 27965 transitions. [2024-11-18 10:52:14,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 25234 states and 27965 transitions. [2024-11-18 10:52:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 10:52:14,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:14,876 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:14,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 10:52:15,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 10:52:15,077 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:15,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:15,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1411286270, now seen corresponding path program 1 times [2024-11-18 10:52:15,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:15,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170491982] [2024-11-18 10:52:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 10:52:15,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170491982] [2024-11-18 10:52:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170491982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265465600] [2024-11-18 10:52:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:15,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:15,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:52:15,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:52:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:15,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:52:15,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:52:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 143 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:16,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:52:16,413 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:52:16,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265465600] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:16,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:52:16,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 9 [2024-11-18 10:52:16,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035551995] [2024-11-18 10:52:16,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:16,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:52:16,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:16,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:52:16,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:52:16,416 INFO L87 Difference]: Start difference. First operand 25234 states and 27965 transitions. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:18,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:18,644 INFO L93 Difference]: Finished difference Result 68329 states and 75854 transitions. [2024-11-18 10:52:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:18,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 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 350 [2024-11-18 10:52:18,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:18,688 INFO L225 Difference]: With dead ends: 68329 [2024-11-18 10:52:18,688 INFO L226 Difference]: Without dead ends: 42239 [2024-11-18 10:52:18,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:52:18,710 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 1221 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:18,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 111 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:52:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42239 states. [2024-11-18 10:52:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42239 to 41808. [2024-11-18 10:52:19,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41808 states, 41807 states have (on average 1.0915396943095654) internal successors, (45634), 41807 states have internal predecessors, (45634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41808 states to 41808 states and 45634 transitions. [2024-11-18 10:52:19,152 INFO L78 Accepts]: Start accepts. Automaton has 41808 states and 45634 transitions. Word has length 350 [2024-11-18 10:52:19,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:19,153 INFO L471 AbstractCegarLoop]: Abstraction has 41808 states and 45634 transitions. [2024-11-18 10:52:19,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 41808 states and 45634 transitions. [2024-11-18 10:52:19,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-18 10:52:19,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:19,157 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:19,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:52:19,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 10:52:19,358 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:19,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1505087168, now seen corresponding path program 1 times [2024-11-18 10:52:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233097261] [2024-11-18 10:52:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 10:52:20,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:20,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233097261] [2024-11-18 10:52:20,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233097261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:20,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965888643] [2024-11-18 10:52:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:20,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:20,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:20,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:52:20,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:52:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:20,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:52:20,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:52:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 10:52:21,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:52:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 10:52:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965888643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:52:22,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:52:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:52:22,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8502205] [2024-11-18 10:52:22,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:52:22,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 10:52:22,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 10:52:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:52:22,210 INFO L87 Difference]: Start difference. First operand 41808 states and 45634 transitions. Second operand has 10 states, 10 states have (on average 86.6) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:26,858 INFO L93 Difference]: Finished difference Result 104062 states and 113757 transitions. [2024-11-18 10:52:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 10:52:26,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 86.6) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 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 365 [2024-11-18 10:52:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:26,927 INFO L225 Difference]: With dead ends: 104062 [2024-11-18 10:52:26,927 INFO L226 Difference]: Without dead ends: 62256 [2024-11-18 10:52:26,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-18 10:52:26,954 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 2987 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 6569 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 7400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:26,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2987 Valid, 279 Invalid, 7400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6569 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 10:52:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62256 states. [2024-11-18 10:52:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62256 to 61361. [2024-11-18 10:52:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61361 states, 61360 states have (on average 1.082561929595828) internal successors, (66426), 61360 states have internal predecessors, (66426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61361 states to 61361 states and 66426 transitions. [2024-11-18 10:52:27,553 INFO L78 Accepts]: Start accepts. Automaton has 61361 states and 66426 transitions. Word has length 365 [2024-11-18 10:52:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:27,553 INFO L471 AbstractCegarLoop]: Abstraction has 61361 states and 66426 transitions. [2024-11-18 10:52:27,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.6) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 61361 states and 66426 transitions. [2024-11-18 10:52:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-18 10:52:27,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:27,561 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-18 10:52:27,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 10:52:27,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:27,762 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:27,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1439816606, now seen corresponding path program 1 times [2024-11-18 10:52:27,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:27,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578655296] [2024-11-18 10:52:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:27,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 10:52:28,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:28,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578655296] [2024-11-18 10:52:28,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578655296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:28,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:28,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:28,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144253915] [2024-11-18 10:52:28,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:28,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:28,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:28,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:28,512 INFO L87 Difference]: Start difference. First operand 61361 states and 66426 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:29,888 INFO L93 Difference]: Finished difference Result 133369 states and 144384 transitions. [2024-11-18 10:52:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 428 [2024-11-18 10:52:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:29,962 INFO L225 Difference]: With dead ends: 133369 [2024-11-18 10:52:29,962 INFO L226 Difference]: Without dead ends: 72860 [2024-11-18 10:52:29,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:29,985 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 295 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:29,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 686 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:52:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72860 states. [2024-11-18 10:52:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72860 to 71139. [2024-11-18 10:52:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71139 states, 71138 states have (on average 1.077328572633473) internal successors, (76639), 71138 states have internal predecessors, (76639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71139 states to 71139 states and 76639 transitions. [2024-11-18 10:52:30,679 INFO L78 Accepts]: Start accepts. Automaton has 71139 states and 76639 transitions. Word has length 428 [2024-11-18 10:52:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:30,679 INFO L471 AbstractCegarLoop]: Abstraction has 71139 states and 76639 transitions. [2024-11-18 10:52:30,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 71139 states and 76639 transitions. [2024-11-18 10:52:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-18 10:52:30,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:30,683 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-18 10:52:30,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:52:30,684 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:30,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash -534438745, now seen corresponding path program 1 times [2024-11-18 10:52:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282588644] [2024-11-18 10:52:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 10:52:31,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282588644] [2024-11-18 10:52:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282588644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:31,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:31,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:52:31,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615498934] [2024-11-18 10:52:31,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:31,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:52:31,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:52:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:31,450 INFO L87 Difference]: Start difference. First operand 71139 states and 76639 transitions. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:33,369 INFO L93 Difference]: Finished difference Result 141426 states and 152421 transitions. [2024-11-18 10:52:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:33,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 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 447 [2024-11-18 10:52:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:33,453 INFO L225 Difference]: With dead ends: 141426 [2024-11-18 10:52:33,453 INFO L226 Difference]: Without dead ends: 71139 [2024-11-18 10:52:33,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:33,496 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 720 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:33,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 670 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:52:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71139 states. [2024-11-18 10:52:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71139 to 71139. [2024-11-18 10:52:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71139 states, 71138 states have (on average 1.0762602266018162) internal successors, (76563), 71138 states have internal predecessors, (76563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71139 states to 71139 states and 76563 transitions. [2024-11-18 10:52:34,420 INFO L78 Accepts]: Start accepts. Automaton has 71139 states and 76563 transitions. Word has length 447 [2024-11-18 10:52:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:34,420 INFO L471 AbstractCegarLoop]: Abstraction has 71139 states and 76563 transitions. [2024-11-18 10:52:34,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 71139 states and 76563 transitions. [2024-11-18 10:52:34,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-11-18 10:52:34,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:34,429 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:34,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:52:34,430 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:34,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1192677802, now seen corresponding path program 1 times [2024-11-18 10:52:34,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:34,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481768877] [2024-11-18 10:52:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:34,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-18 10:52:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481768877] [2024-11-18 10:52:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481768877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:35,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90417683] [2024-11-18 10:52:35,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:35,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:35,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:35,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:35,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:35,020 INFO L87 Difference]: Start difference. First operand 71139 states and 76563 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:36,618 INFO L93 Difference]: Finished difference Result 151641 states and 163494 transitions. [2024-11-18 10:52:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 534 [2024-11-18 10:52:36,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:36,731 INFO L225 Difference]: With dead ends: 151641 [2024-11-18 10:52:36,731 INFO L226 Difference]: Without dead ends: 80503 [2024-11-18 10:52:36,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:36,784 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 245 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:36,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 568 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:52:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80503 states. [2024-11-18 10:52:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80503 to 79220. [2024-11-18 10:52:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79220 states, 79219 states have (on average 1.0749062724851361) internal successors, (85153), 79219 states have internal predecessors, (85153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79220 states to 79220 states and 85153 transitions. [2024-11-18 10:52:37,865 INFO L78 Accepts]: Start accepts. Automaton has 79220 states and 85153 transitions. Word has length 534 [2024-11-18 10:52:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:37,865 INFO L471 AbstractCegarLoop]: Abstraction has 79220 states and 85153 transitions. [2024-11-18 10:52:37,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 79220 states and 85153 transitions. [2024-11-18 10:52:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2024-11-18 10:52:37,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:37,874 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:37,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:52:37,874 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:37,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 79307671, now seen corresponding path program 1 times [2024-11-18 10:52:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:37,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806436996] [2024-11-18 10:52:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:37,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 10:52:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806436996] [2024-11-18 10:52:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806436996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:38,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:38,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:52:38,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976429114] [2024-11-18 10:52:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:38,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:52:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:38,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:52:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:38,559 INFO L87 Difference]: Start difference. First operand 79220 states and 85153 transitions. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:40,989 INFO L93 Difference]: Finished difference Result 195058 states and 209532 transitions. [2024-11-18 10:52:40,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:40,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 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 560 [2024-11-18 10:52:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:41,139 INFO L225 Difference]: With dead ends: 195058 [2024-11-18 10:52:41,140 INFO L226 Difference]: Without dead ends: 116265 [2024-11-18 10:52:41,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:52:41,185 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 706 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:41,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 159 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:52:41,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116265 states. [2024-11-18 10:52:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116265 to 98395. [2024-11-18 10:52:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98395 states, 98394 states have (on average 1.0735715592414172) internal successors, (105633), 98394 states have internal predecessors, (105633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98395 states to 98395 states and 105633 transitions. [2024-11-18 10:52:42,770 INFO L78 Accepts]: Start accepts. Automaton has 98395 states and 105633 transitions. Word has length 560 [2024-11-18 10:52:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:42,770 INFO L471 AbstractCegarLoop]: Abstraction has 98395 states and 105633 transitions. [2024-11-18 10:52:42,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 98395 states and 105633 transitions. [2024-11-18 10:52:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-18 10:52:42,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:42,782 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:42,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:52:42,782 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:42,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash -471970317, now seen corresponding path program 1 times [2024-11-18 10:52:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630187498] [2024-11-18 10:52:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-18 10:52:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:43,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630187498] [2024-11-18 10:52:43,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630187498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:43,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:43,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:43,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380689432] [2024-11-18 10:52:43,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:43,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:43,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:43,430 INFO L87 Difference]: Start difference. First operand 98395 states and 105633 transitions. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:45,045 INFO L93 Difference]: Finished difference Result 205304 states and 220691 transitions. [2024-11-18 10:52:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:45,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 561 [2024-11-18 10:52:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:45,187 INFO L225 Difference]: With dead ends: 205304 [2024-11-18 10:52:45,187 INFO L226 Difference]: Without dead ends: 107761 [2024-11-18 10:52:45,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:45,249 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 300 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:45,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 267 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:52:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107761 states. [2024-11-18 10:52:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107761 to 101372. [2024-11-18 10:52:46,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101372 states, 101371 states have (on average 1.0664687139319924) internal successors, (108109), 101371 states have internal predecessors, (108109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101372 states to 101372 states and 108109 transitions. [2024-11-18 10:52:46,867 INFO L78 Accepts]: Start accepts. Automaton has 101372 states and 108109 transitions. Word has length 561 [2024-11-18 10:52:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:46,868 INFO L471 AbstractCegarLoop]: Abstraction has 101372 states and 108109 transitions. [2024-11-18 10:52:46,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 101372 states and 108109 transitions. [2024-11-18 10:52:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-18 10:52:46,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:46,882 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:46,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:52:46,882 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:46,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:46,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1828280334, now seen corresponding path program 1 times [2024-11-18 10:52:46,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:46,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096249498] [2024-11-18 10:52:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:46,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 846 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-18 10:52:47,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096249498] [2024-11-18 10:52:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096249498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:47,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:47,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975789410] [2024-11-18 10:52:47,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:47,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:47,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:47,846 INFO L87 Difference]: Start difference. First operand 101372 states and 108109 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:49,361 INFO L93 Difference]: Finished difference Result 203177 states and 216691 transitions. [2024-11-18 10:52:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 624 [2024-11-18 10:52:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:49,482 INFO L225 Difference]: With dead ends: 203177 [2024-11-18 10:52:49,482 INFO L226 Difference]: Without dead ends: 102657 [2024-11-18 10:52:49,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:49,535 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 258 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:49,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 731 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:52:49,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102657 states. [2024-11-18 10:52:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102657 to 102653. [2024-11-18 10:52:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102653 states, 102652 states have (on average 1.0659802049643456) internal successors, (109425), 102652 states have internal predecessors, (109425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102653 states to 102653 states and 109425 transitions. [2024-11-18 10:52:50,974 INFO L78 Accepts]: Start accepts. Automaton has 102653 states and 109425 transitions. Word has length 624 [2024-11-18 10:52:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:50,974 INFO L471 AbstractCegarLoop]: Abstraction has 102653 states and 109425 transitions. [2024-11-18 10:52:50,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand 102653 states and 109425 transitions. [2024-11-18 10:52:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-11-18 10:52:50,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:50,988 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:52:50,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 10:52:50,988 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:50,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash -812126995, now seen corresponding path program 1 times [2024-11-18 10:52:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:50,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323884146] [2024-11-18 10:52:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 767 proven. 0 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2024-11-18 10:52:51,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:51,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323884146] [2024-11-18 10:52:51,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323884146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:51,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:52:51,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:52:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600138905] [2024-11-18 10:52:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:51,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:52:51,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:52:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:51,341 INFO L87 Difference]: Start difference. First operand 102653 states and 109425 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:53,201 INFO L93 Difference]: Finished difference Result 204908 states and 218421 transitions. [2024-11-18 10:52:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:52:53,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 631 [2024-11-18 10:52:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:53,324 INFO L225 Difference]: With dead ends: 204908 [2024-11-18 10:52:53,324 INFO L226 Difference]: Without dead ends: 103107 [2024-11-18 10:52:53,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:52:53,373 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 477 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:53,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 182 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:52:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103107 states. [2024-11-18 10:52:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103107 to 102238. [2024-11-18 10:52:54,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102238 states, 102237 states have (on average 1.0646634779972026) internal successors, (108848), 102237 states have internal predecessors, (108848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102238 states to 102238 states and 108848 transitions. [2024-11-18 10:52:54,523 INFO L78 Accepts]: Start accepts. Automaton has 102238 states and 108848 transitions. Word has length 631 [2024-11-18 10:52:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:52:54,524 INFO L471 AbstractCegarLoop]: Abstraction has 102238 states and 108848 transitions. [2024-11-18 10:52:54,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 102238 states and 108848 transitions. [2024-11-18 10:52:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2024-11-18 10:52:54,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:52:54,534 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:52:54,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 10:52:54,534 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:52:54,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:52:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash 715692825, now seen corresponding path program 1 times [2024-11-18 10:52:54,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:52:54,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075699045] [2024-11-18 10:52:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:52:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 1000 proven. 177 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 10:52:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:52:55,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075699045] [2024-11-18 10:52:55,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075699045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:52:55,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872004525] [2024-11-18 10:52:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:52:55,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:52:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:52:55,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:52:55,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:52:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:52:55,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:52:55,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:52:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2024-11-18 10:52:56,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:52:56,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872004525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:52:56,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:52:56,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 10:52:56,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461572726] [2024-11-18 10:52:56,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:52:56,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:52:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:52:56,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:52:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:52:56,229 INFO L87 Difference]: Start difference. First operand 102238 states and 108848 transitions. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:52:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:52:58,929 INFO L93 Difference]: Finished difference Result 232999 states and 247573 transitions. [2024-11-18 10:52:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:52:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 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 634 [2024-11-18 10:52:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:52:59,105 INFO L225 Difference]: With dead ends: 232999 [2024-11-18 10:52:59,105 INFO L226 Difference]: Without dead ends: 131188 [2024-11-18 10:52:59,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:52:59,153 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 700 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:52:59,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 155 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:52:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131188 states. [2024-11-18 10:53:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131188 to 115001. [2024-11-18 10:53:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115001 states, 115000 states have (on average 1.061513043478261) internal successors, (122074), 115000 states have internal predecessors, (122074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115001 states to 115001 states and 122074 transitions. [2024-11-18 10:53:00,637 INFO L78 Accepts]: Start accepts. Automaton has 115001 states and 122074 transitions. Word has length 634 [2024-11-18 10:53:00,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:53:00,637 INFO L471 AbstractCegarLoop]: Abstraction has 115001 states and 122074 transitions. [2024-11-18 10:53:00,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:53:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 115001 states and 122074 transitions. [2024-11-18 10:53:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-18 10:53:00,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:53:00,646 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:53:00,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 10:53:00,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:00,847 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:53:00,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:53:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash -962312145, now seen corresponding path program 1 times [2024-11-18 10:53:00,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:53:00,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579153060] [2024-11-18 10:53:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:00,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:53:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 845 proven. 120 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 10:53:02,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:53:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579153060] [2024-11-18 10:53:02,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579153060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171310040] [2024-11-18 10:53:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:53:02,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:53:02,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:53:02,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:53:02,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:53:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:53:02,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:53:02,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:53:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 845 proven. 120 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 10:53:02,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:53:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 735 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-18 10:53:03,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171310040] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:53:03,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:53:03,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-11-18 10:53:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014898775] [2024-11-18 10:53:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:53:03,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:53:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:53:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:53:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:53:03,397 INFO L87 Difference]: Start difference. First operand 115001 states and 122074 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)