./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label18.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_label18.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 36682755a8fd6d5761d4aa48745e539f37b082d91c2b7f5a4981e2bf074e7e62 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:49:48,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:49:49,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:49:49,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:49:49,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:49:49,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:49:49,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:49:49,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:49:49,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:49:49,100 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:49:49,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:49:49,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:49:49,101 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:49:49,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:49:49,103 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:49:49,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:49:49,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:49:49,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:49:49,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:49:49,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:49:49,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:49:49,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:49:49,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:49:49,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:49:49,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:49:49,109 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:49:49,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:49:49,110 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:49:49,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:49:49,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:49:49,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:49:49,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:49:49,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:49:49,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:49:49,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:49:49,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:49:49,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:49:49,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:49:49,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:49:49,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:49:49,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:49:49,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:49:49,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36682755a8fd6d5761d4aa48745e539f37b082d91c2b7f5a4981e2bf074e7e62 [2024-11-18 10:49:49,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:49:49,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:49:49,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:49:49,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:49:49,475 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:49:49,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label18.c [2024-11-18 10:49:50,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:49:51,376 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:49:51,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label18.c [2024-11-18 10:49:51,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a09e8202/bbce12e217c5441f9af2aa068dd009e3/FLAGd1385061e [2024-11-18 10:49:51,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a09e8202/bbce12e217c5441f9af2aa068dd009e3 [2024-11-18 10:49:51,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:49:51,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:49:51,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:49:51,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:49:51,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:49:51,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:49:51" (1/1) ... [2024-11-18 10:49:51,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644be2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:51, skipping insertion in model container [2024-11-18 10:49:51,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:49:51" (1/1) ... [2024-11-18 10:49:51,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:49:51,833 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_label18.c[8129,8142] [2024-11-18 10:49:52,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:49:52,411 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:49:52,441 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_label18.c[8129,8142] [2024-11-18 10:49:52,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:49:52,720 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:49:52,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52 WrapperNode [2024-11-18 10:49:52,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:49:52,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:49:52,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:49:52,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:49:52,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:52,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,018 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-18 10:49:53,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:49:53,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:49:53,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:49:53,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:49:53,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,313 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 10:49:53,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:49:53,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:49:53,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:49:53,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:49:53,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (1/1) ... [2024-11-18 10:49:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:49:53,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:49:53,670 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 10:49:53,673 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 10:49:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:49:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:49:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:49:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:49:53,788 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:49:53,790 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:49:56,964 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-18 10:49:56,964 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:49:57,004 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:49:57,005 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:49:57,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:49:57 BoogieIcfgContainer [2024-11-18 10:49:57,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:49:57,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:49:57,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:49:57,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:49:57,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:49:51" (1/3) ... [2024-11-18 10:49:57,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759f66fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:49:57, skipping insertion in model container [2024-11-18 10:49:57,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:49:52" (2/3) ... [2024-11-18 10:49:57,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759f66fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:49:57, skipping insertion in model container [2024-11-18 10:49:57,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:49:57" (3/3) ... [2024-11-18 10:49:57,018 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18.c [2024-11-18 10:49:57,039 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:49:57,039 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:49:57,121 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:49:57,130 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;@72e89d51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:49:57,131 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:49:57,137 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 10:49:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-18 10:49:57,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:49:57,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:49:57,152 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:49:57,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:49:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1246856209, now seen corresponding path program 1 times [2024-11-18 10:49:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:49:57,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852669763] [2024-11-18 10:49:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:49:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:49:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:49:57,587 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 10:49:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:49:57,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852669763] [2024-11-18 10:49:57,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852669763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:49:57,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:49:57,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:49:57,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220903856] [2024-11-18 10:49:57,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:49:57,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:49:57,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:49:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:49:57,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:49:57,632 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 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:00,028 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-18 10:50:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:00,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-18 10:50:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:00,060 INFO L225 Difference]: With dead ends: 1667 [2024-11-18 10:50:00,060 INFO L226 Difference]: Without dead ends: 998 [2024-11-18 10:50:00,070 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 10:50:00,074 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 490 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:00,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:50:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-18 10:50:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-18 10:50:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 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 10:50:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-18 10:50:00,184 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 55 [2024-11-18 10:50:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:00,185 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-18 10:50:00,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-18 10:50:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 10:50:00,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:00,191 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:00,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:50:00,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:00,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash -368294123, now seen corresponding path program 1 times [2024-11-18 10:50:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:00,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061077497] [2024-11-18 10:50:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061077497] [2024-11-18 10:50:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061077497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:00,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:00,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:00,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597354252] [2024-11-18 10:50:00,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:00,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:00,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:00,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:00,487 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 10:50:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:02,673 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2024-11-18 10:50:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:02,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-18 10:50:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:02,681 INFO L225 Difference]: With dead ends: 2841 [2024-11-18 10:50:02,681 INFO L226 Difference]: Without dead ends: 1861 [2024-11-18 10:50:02,686 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 10:50:02,687 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:02,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 10:50:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-18 10:50:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2024-11-18 10:50:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 10:50:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2024-11-18 10:50:02,740 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 120 [2024-11-18 10:50:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:02,743 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2024-11-18 10:50:02,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 10:50:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2024-11-18 10:50:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 10:50:02,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:02,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:02,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:50:02,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:02,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1886359936, now seen corresponding path program 1 times [2024-11-18 10:50:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081533247] [2024-11-18 10:50:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:02,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:03,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:03,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081533247] [2024-11-18 10:50:03,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081533247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:03,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:03,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:03,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178216010] [2024-11-18 10:50:03,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:03,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:03,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:03,293 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 10:50:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:05,743 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2024-11-18 10:50:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:05,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2024-11-18 10:50:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:05,755 INFO L225 Difference]: With dead ends: 4591 [2024-11-18 10:50:05,755 INFO L226 Difference]: Without dead ends: 2736 [2024-11-18 10:50:05,759 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 10:50:05,760 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:05,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 10:50:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-18 10:50:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2024-11-18 10:50:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 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 10:50:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2024-11-18 10:50:05,816 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 160 [2024-11-18 10:50:05,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:05,817 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2024-11-18 10:50:05,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 10:50:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2024-11-18 10:50:05,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 10:50:05,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:05,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:05,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:50:05,821 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:05,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash 919734479, now seen corresponding path program 1 times [2024-11-18 10:50:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013376234] [2024-11-18 10:50:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:05,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:05,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013376234] [2024-11-18 10:50:05,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013376234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:05,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:05,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:05,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629458876] [2024-11-18 10:50:05,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:05,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:05,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:05,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:05,980 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:08,080 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2024-11-18 10:50:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:08,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-18 10:50:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:08,095 INFO L225 Difference]: With dead ends: 6709 [2024-11-18 10:50:08,095 INFO L226 Difference]: Without dead ends: 3995 [2024-11-18 10:50:08,103 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 10:50:08,104 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 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, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:08,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:50:08,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-18 10:50:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2024-11-18 10:50:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 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 10:50:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2024-11-18 10:50:08,165 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 166 [2024-11-18 10:50:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:08,166 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2024-11-18 10:50:08,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2024-11-18 10:50:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 10:50:08,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:08,169 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:08,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:50:08,169 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:08,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash -983063388, now seen corresponding path program 1 times [2024-11-18 10:50:08,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:08,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617753987] [2024-11-18 10:50:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:08,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617753987] [2024-11-18 10:50:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617753987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:08,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 10:50:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632537670] [2024-11-18 10:50:08,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:08,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:50:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:50:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:50:08,615 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:10,998 INFO L93 Difference]: Finished difference Result 8005 states and 10508 transitions. [2024-11-18 10:50:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:50:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-18 10:50:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:11,014 INFO L225 Difference]: With dead ends: 8005 [2024-11-18 10:50:11,015 INFO L226 Difference]: Without dead ends: 4865 [2024-11-18 10:50:11,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:50:11,028 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1089 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:11,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 894 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:50:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-18 10:50:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4852. [2024-11-18 10:50:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 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 10:50:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2024-11-18 10:50:11,125 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 203 [2024-11-18 10:50:11,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:11,126 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2024-11-18 10:50:11,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:11,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2024-11-18 10:50:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-18 10:50:11,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:11,130 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:50:11,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:50:11,130 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:11,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash 120323603, now seen corresponding path program 1 times [2024-11-18 10:50:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085674232] [2024-11-18 10:50:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:50:11,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:11,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085674232] [2024-11-18 10:50:11,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085674232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:11,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811241324] [2024-11-18 10:50:11,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:11,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:11,357 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 10:50:13,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:13,246 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2024-11-18 10:50:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:13,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2024-11-18 10:50:13,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:13,275 INFO L225 Difference]: With dead ends: 12249 [2024-11-18 10:50:13,276 INFO L226 Difference]: Without dead ends: 7399 [2024-11-18 10:50:13,284 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 10:50:13,285 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 393 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:13,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:50:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2024-11-18 10:50:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2024-11-18 10:50:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 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 10:50:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2024-11-18 10:50:13,386 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 209 [2024-11-18 10:50:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:13,387 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2024-11-18 10:50:13,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 10:50:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2024-11-18 10:50:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 10:50:13,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:13,391 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:50:13,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:50:13,392 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:13,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash -749939841, now seen corresponding path program 1 times [2024-11-18 10:50:13,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:13,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960345031] [2024-11-18 10:50:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:13,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 75 proven. 30 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:50:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960345031] [2024-11-18 10:50:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960345031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2790181] [2024-11-18 10:50:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:13,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:13,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:13,889 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 10:50:13,892 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 10:50:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:14,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:50:14,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:50:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-18 10:50:14,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:50:14,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2790181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:14,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:50:14,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:50:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517363236] [2024-11-18 10:50:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:14,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:50:14,124 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 10:50:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:16,075 INFO L93 Difference]: Finished difference Result 12204 states and 15757 transitions. [2024-11-18 10:50:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:16,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 222 [2024-11-18 10:50:16,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:16,096 INFO L225 Difference]: With dead ends: 12204 [2024-11-18 10:50:16,096 INFO L226 Difference]: Without dead ends: 7380 [2024-11-18 10:50:16,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:50:16,104 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 417 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:16,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 511 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 10:50:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2024-11-18 10:50:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 6525. [2024-11-18 10:50:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6525 states, 6524 states have (on average 1.2665542611894542) internal successors, (8263), 6524 states have internal predecessors, (8263), 0 states have call successors, (0), 0 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 10:50:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6525 states to 6525 states and 8263 transitions. [2024-11-18 10:50:16,245 INFO L78 Accepts]: Start accepts. Automaton has 6525 states and 8263 transitions. Word has length 222 [2024-11-18 10:50:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:16,245 INFO L471 AbstractCegarLoop]: Abstraction has 6525 states and 8263 transitions. [2024-11-18 10:50:16,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 10:50:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6525 states and 8263 transitions. [2024-11-18 10:50:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-18 10:50:16,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:16,250 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:16,271 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 10:50:16,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:16,451 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:16,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:16,452 INFO L85 PathProgramCache]: Analyzing trace with hash -186884925, now seen corresponding path program 1 times [2024-11-18 10:50:16,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:16,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667028080] [2024-11-18 10:50:16,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:16,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:16,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:16,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667028080] [2024-11-18 10:50:16,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667028080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:16,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:16,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:16,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440539641] [2024-11-18 10:50:16,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:16,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:16,806 INFO L87 Difference]: Start difference. First operand 6525 states and 8263 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 10:50:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:18,883 INFO L93 Difference]: Finished difference Result 18180 states and 22851 transitions. [2024-11-18 10:50:18,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:18,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2024-11-18 10:50:18,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:18,901 INFO L225 Difference]: With dead ends: 18180 [2024-11-18 10:50:18,901 INFO L226 Difference]: Without dead ends: 10805 [2024-11-18 10:50:18,908 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 10:50:18,909 INFO L432 NwaCegarLoop]: 877 mSDtfsCounter, 371 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:18,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 950 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 10:50:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2024-11-18 10:50:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 10797. [2024-11-18 10:50:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10797 states, 10796 states have (on average 1.1779362726935902) internal successors, (12717), 10796 states have internal predecessors, (12717), 0 states have call successors, (0), 0 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 10:50:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10797 states to 10797 states and 12717 transitions. [2024-11-18 10:50:19,057 INFO L78 Accepts]: Start accepts. Automaton has 10797 states and 12717 transitions. Word has length 271 [2024-11-18 10:50:19,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:19,057 INFO L471 AbstractCegarLoop]: Abstraction has 10797 states and 12717 transitions. [2024-11-18 10:50:19,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 10:50:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand 10797 states and 12717 transitions. [2024-11-18 10:50:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-18 10:50:19,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:19,063 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 10:50:19,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:50:19,064 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:19,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:19,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1538620787, now seen corresponding path program 1 times [2024-11-18 10:50:19,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:19,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369665839] [2024-11-18 10:50:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:19,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:19,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369665839] [2024-11-18 10:50:19,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369665839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:19,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122472244] [2024-11-18 10:50:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:19,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:19,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:19,418 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 10:50:19,420 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 10:50:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:19,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:50:19,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:50:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:19,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:50:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:50:20,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122472244] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:20,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:50:20,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2024-11-18 10:50:20,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252307135] [2024-11-18 10:50:20,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:20,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:50:20,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:20,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:50:20,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:50:20,439 INFO L87 Difference]: Start difference. First operand 10797 states and 12717 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 10:50:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:23,702 INFO L93 Difference]: Finished difference Result 33972 states and 40195 transitions. [2024-11-18 10:50:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:50:23,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 275 [2024-11-18 10:50:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:23,763 INFO L225 Difference]: With dead ends: 33972 [2024-11-18 10:50:23,763 INFO L226 Difference]: Without dead ends: 22312 [2024-11-18 10:50:23,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:50:23,784 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 1018 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:23,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 144 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 10:50:23,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22312 states. [2024-11-18 10:50:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22312 to 21035. [2024-11-18 10:50:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21035 states, 21034 states have (on average 1.1547494532661404) internal successors, (24289), 21034 states have internal predecessors, (24289), 0 states have call successors, (0), 0 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 10:50:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21035 states to 21035 states and 24289 transitions. [2024-11-18 10:50:24,200 INFO L78 Accepts]: Start accepts. Automaton has 21035 states and 24289 transitions. Word has length 275 [2024-11-18 10:50:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:24,201 INFO L471 AbstractCegarLoop]: Abstraction has 21035 states and 24289 transitions. [2024-11-18 10:50:24,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 10:50:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 21035 states and 24289 transitions. [2024-11-18 10:50:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-18 10:50:24,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:24,208 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:24,227 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 10:50:24,408 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,SelfDestructingSolverStorable8 [2024-11-18 10:50:24,410 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:24,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash 787472338, now seen corresponding path program 1 times [2024-11-18 10:50:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:24,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064934186] [2024-11-18 10:50:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:24,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 10:50:24,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:24,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064934186] [2024-11-18 10:50:24,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064934186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:24,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:24,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040022219] [2024-11-18 10:50:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:24,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:24,652 INFO L87 Difference]: Start difference. First operand 21035 states and 24289 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:26,228 INFO L93 Difference]: Finished difference Result 45470 states and 52617 transitions. [2024-11-18 10:50:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2024-11-18 10:50:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:26,275 INFO L225 Difference]: With dead ends: 45470 [2024-11-18 10:50:26,276 INFO L226 Difference]: Without dead ends: 24011 [2024-11-18 10:50:26,300 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 10:50:26,301 INFO L432 NwaCegarLoop]: 767 mSDtfsCounter, 385 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:26,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 834 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:50:26,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24011 states. [2024-11-18 10:50:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24011 to 24011. [2024-11-18 10:50:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24011 states, 24010 states have (on average 1.1354435651811745) internal successors, (27262), 24010 states have internal predecessors, (27262), 0 states have call successors, (0), 0 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 10:50:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24011 states to 24011 states and 27262 transitions. [2024-11-18 10:50:26,735 INFO L78 Accepts]: Start accepts. Automaton has 24011 states and 27262 transitions. Word has length 292 [2024-11-18 10:50:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:26,736 INFO L471 AbstractCegarLoop]: Abstraction has 24011 states and 27262 transitions. [2024-11-18 10:50:26,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 24011 states and 27262 transitions. [2024-11-18 10:50:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-18 10:50:26,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:26,744 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:26,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:50:26,745 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:26,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:26,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2144464816, now seen corresponding path program 1 times [2024-11-18 10:50:26,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:26,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166386779] [2024-11-18 10:50:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:26,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-18 10:50:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:27,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166386779] [2024-11-18 10:50:27,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166386779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:27,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:27,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:27,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999540802] [2024-11-18 10:50:27,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:27,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:27,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:27,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:27,028 INFO L87 Difference]: Start difference. First operand 24011 states and 27262 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 10:50:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:29,063 INFO L93 Difference]: Finished difference Result 57402 states and 65479 transitions. [2024-11-18 10:50:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:29,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 349 [2024-11-18 10:50:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:29,096 INFO L225 Difference]: With dead ends: 57402 [2024-11-18 10:50:29,096 INFO L226 Difference]: Without dead ends: 33393 [2024-11-18 10:50:29,108 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 10:50:29,108 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 323 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:29,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 854 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:50:29,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33393 states. [2024-11-18 10:50:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33393 to 31671. [2024-11-18 10:50:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31671 states, 31670 states have (on average 1.129428481212504) internal successors, (35769), 31670 states have internal predecessors, (35769), 0 states have call successors, (0), 0 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 10:50:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31671 states to 31671 states and 35769 transitions. [2024-11-18 10:50:29,468 INFO L78 Accepts]: Start accepts. Automaton has 31671 states and 35769 transitions. Word has length 349 [2024-11-18 10:50:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:29,469 INFO L471 AbstractCegarLoop]: Abstraction has 31671 states and 35769 transitions. [2024-11-18 10:50:29,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 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 10:50:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 31671 states and 35769 transitions. [2024-11-18 10:50:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 10:50:29,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:29,476 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:29,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:50:29,477 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:29,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1805536226, now seen corresponding path program 1 times [2024-11-18 10:50:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128013645] [2024-11-18 10:50:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 266 proven. 78 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-18 10:50:30,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128013645] [2024-11-18 10:50:30,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128013645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055530686] [2024-11-18 10:50:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:30,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:50:30,125 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 10:50:30,130 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 10:50:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:30,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 10:50:30,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:50:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 266 proven. 78 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-18 10:50:30,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:50:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-18 10:50:30,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055530686] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:50:30,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:50:30,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-18 10:50:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492127467] [2024-11-18 10:50:30,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:30,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:50:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:30,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:50:30,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:50:30,792 INFO L87 Difference]: Start difference. First operand 31671 states and 35769 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 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 10:50:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:33,768 INFO L93 Difference]: Finished difference Result 76141 states and 86284 transitions. [2024-11-18 10:50:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:50:33,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 10:50:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:33,823 INFO L225 Difference]: With dead ends: 76141 [2024-11-18 10:50:33,823 INFO L226 Difference]: Without dead ends: 44045 [2024-11-18 10:50:33,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:50:33,842 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 886 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:33,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 189 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 10:50:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44045 states. [2024-11-18 10:50:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44045 to 42342. [2024-11-18 10:50:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42342 states, 42341 states have (on average 1.139155900899837) internal successors, (48233), 42341 states have internal predecessors, (48233), 0 states have call successors, (0), 0 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 10:50:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42342 states to 42342 states and 48233 transitions. [2024-11-18 10:50:34,580 INFO L78 Accepts]: Start accepts. Automaton has 42342 states and 48233 transitions. Word has length 350 [2024-11-18 10:50:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:34,582 INFO L471 AbstractCegarLoop]: Abstraction has 42342 states and 48233 transitions. [2024-11-18 10:50:34,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 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 10:50:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 42342 states and 48233 transitions. [2024-11-18 10:50:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-18 10:50:34,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:34,591 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:34,609 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 10:50:34,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:50:34,796 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:34,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash -706456091, now seen corresponding path program 1 times [2024-11-18 10:50:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:34,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582555228] [2024-11-18 10:50:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:50:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582555228] [2024-11-18 10:50:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582555228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:35,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:35,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:35,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878645467] [2024-11-18 10:50:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:35,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:35,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:35,368 INFO L87 Difference]: Start difference. First operand 42342 states and 48233 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 10:50:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:37,092 INFO L93 Difference]: Finished difference Result 100001 states and 113526 transitions. [2024-11-18 10:50:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:37,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 367 [2024-11-18 10:50:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:37,172 INFO L225 Difference]: With dead ends: 100001 [2024-11-18 10:50:37,173 INFO L226 Difference]: Without dead ends: 57229 [2024-11-18 10:50:37,209 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 10:50:37,210 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 421 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:37,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 423 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 10:50:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57229 states. [2024-11-18 10:50:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57229 to 53820. [2024-11-18 10:50:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53820 states, 53819 states have (on average 1.1234694067151005) internal successors, (60464), 53819 states have internal predecessors, (60464), 0 states have call successors, (0), 0 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 10:50:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53820 states to 53820 states and 60464 transitions. [2024-11-18 10:50:38,012 INFO L78 Accepts]: Start accepts. Automaton has 53820 states and 60464 transitions. Word has length 367 [2024-11-18 10:50:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:38,013 INFO L471 AbstractCegarLoop]: Abstraction has 53820 states and 60464 transitions. [2024-11-18 10:50:38,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 10:50:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 53820 states and 60464 transitions. [2024-11-18 10:50:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-11-18 10:50:38,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:38,025 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:38,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:50:38,025 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:38,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:38,026 INFO L85 PathProgramCache]: Analyzing trace with hash -773242601, now seen corresponding path program 1 times [2024-11-18 10:50:38,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:38,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226334728] [2024-11-18 10:50:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:38,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:50:38,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226334728] [2024-11-18 10:50:38,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226334728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:38,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:38,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:38,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161573381] [2024-11-18 10:50:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:38,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:38,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:38,279 INFO L87 Difference]: Start difference. First operand 53820 states and 60464 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:40,841 INFO L93 Difference]: Finished difference Result 118270 states and 132534 transitions. [2024-11-18 10:50:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:40,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 437 [2024-11-18 10:50:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:40,950 INFO L225 Difference]: With dead ends: 118270 [2024-11-18 10:50:40,951 INFO L226 Difference]: Without dead ends: 64026 [2024-11-18 10:50:40,987 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 10:50:40,988 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 424 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:40,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 349 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 10:50:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64026 states. [2024-11-18 10:50:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64026 to 53813. [2024-11-18 10:50:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53813 states, 53812 states have (on average 1.117427339626849) internal successors, (60131), 53812 states have internal predecessors, (60131), 0 states have call successors, (0), 0 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 10:50:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53813 states to 53813 states and 60131 transitions. [2024-11-18 10:50:41,941 INFO L78 Accepts]: Start accepts. Automaton has 53813 states and 60131 transitions. Word has length 437 [2024-11-18 10:50:41,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:41,942 INFO L471 AbstractCegarLoop]: Abstraction has 53813 states and 60131 transitions. [2024-11-18 10:50:41,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand 53813 states and 60131 transitions. [2024-11-18 10:50:41,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-18 10:50:41,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:41,979 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:41,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:50:41,979 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:41,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash -984566140, now seen corresponding path program 1 times [2024-11-18 10:50:41,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:41,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167455114] [2024-11-18 10:50:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:41,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-18 10:50:42,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167455114] [2024-11-18 10:50:42,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167455114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:42,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:42,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740017050] [2024-11-18 10:50:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:42,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:42,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:42,478 INFO L87 Difference]: Start difference. First operand 53813 states and 60131 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 10:50:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:44,465 INFO L93 Difference]: Finished difference Result 121711 states and 135669 transitions. [2024-11-18 10:50:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:44,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 451 [2024-11-18 10:50:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:44,580 INFO L225 Difference]: With dead ends: 121711 [2024-11-18 10:50:44,580 INFO L226 Difference]: Without dead ends: 67474 [2024-11-18 10:50:44,635 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 10:50:44,636 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 437 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:44,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 317 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:50:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67474 states. [2024-11-18 10:50:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67474 to 54236. [2024-11-18 10:50:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54236 states, 54235 states have (on average 1.1161980271042684) internal successors, (60537), 54235 states have internal predecessors, (60537), 0 states have call successors, (0), 0 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 10:50:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54236 states to 54236 states and 60537 transitions. [2024-11-18 10:50:45,768 INFO L78 Accepts]: Start accepts. Automaton has 54236 states and 60537 transitions. Word has length 451 [2024-11-18 10:50:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:45,773 INFO L471 AbstractCegarLoop]: Abstraction has 54236 states and 60537 transitions. [2024-11-18 10:50:45,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 10:50:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 54236 states and 60537 transitions. [2024-11-18 10:50:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-18 10:50:45,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:45,805 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:50:45,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:50:45,805 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:45,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2117113694, now seen corresponding path program 1 times [2024-11-18 10:50:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865658322] [2024-11-18 10:50:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-18 10:50:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:46,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865658322] [2024-11-18 10:50:46,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865658322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:46,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:46,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:50:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203870865] [2024-11-18 10:50:46,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:46,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:46,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:46,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:46,722 INFO L87 Difference]: Start difference. First operand 54236 states and 60537 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 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 10:50:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:48,745 INFO L93 Difference]: Finished difference Result 122091 states and 135865 transitions. [2024-11-18 10:50:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:48,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 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 479 [2024-11-18 10:50:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:48,821 INFO L225 Difference]: With dead ends: 122091 [2024-11-18 10:50:48,821 INFO L226 Difference]: Without dead ends: 67432 [2024-11-18 10:50:48,851 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 10:50:48,851 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 488 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:48,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 258 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:50:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67432 states. [2024-11-18 10:50:49,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67432 to 53349. [2024-11-18 10:50:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53349 states, 53348 states have (on average 1.104914898402939) internal successors, (58945), 53348 states have internal predecessors, (58945), 0 states have call successors, (0), 0 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 10:50:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53349 states to 53349 states and 58945 transitions. [2024-11-18 10:50:49,723 INFO L78 Accepts]: Start accepts. Automaton has 53349 states and 58945 transitions. Word has length 479 [2024-11-18 10:50:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:49,724 INFO L471 AbstractCegarLoop]: Abstraction has 53349 states and 58945 transitions. [2024-11-18 10:50:49,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 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 10:50:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 53349 states and 58945 transitions. [2024-11-18 10:50:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-18 10:50:49,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:49,745 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:50:49,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:50:49,746 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:49,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1208447391, now seen corresponding path program 1 times [2024-11-18 10:50:49,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:49,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129063724] [2024-11-18 10:50:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 10:50:50,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:50,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129063724] [2024-11-18 10:50:50,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129063724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:50,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:50,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:50:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893000352] [2024-11-18 10:50:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:50,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:50:50,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:50,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:50:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:50:50,610 INFO L87 Difference]: Start difference. First operand 53349 states and 58945 transitions. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 10:50:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:53,550 INFO L93 Difference]: Finished difference Result 132697 states and 146072 transitions. [2024-11-18 10:50:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:50:53,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 499 [2024-11-18 10:50:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:53,808 INFO L225 Difference]: With dead ends: 132697 [2024-11-18 10:50:53,808 INFO L226 Difference]: Without dead ends: 75520 [2024-11-18 10:50:53,828 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 10:50:53,828 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 740 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:53,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 198 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 10:50:53,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75520 states. [2024-11-18 10:50:54,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75520 to 69531. [2024-11-18 10:50:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69531 states, 69530 states have (on average 1.101754638285632) internal successors, (76605), 69530 states have internal predecessors, (76605), 0 states have call successors, (0), 0 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 10:50:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69531 states to 69531 states and 76605 transitions. [2024-11-18 10:50:54,777 INFO L78 Accepts]: Start accepts. Automaton has 69531 states and 76605 transitions. Word has length 499 [2024-11-18 10:50:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:54,778 INFO L471 AbstractCegarLoop]: Abstraction has 69531 states and 76605 transitions. [2024-11-18 10:50:54,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 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 10:50:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 69531 states and 76605 transitions. [2024-11-18 10:50:54,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-18 10:50:54,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:54,792 INFO L215 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:54,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:50:54,792 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:54,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1047721825, now seen corresponding path program 1 times [2024-11-18 10:50:54,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:54,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986310007] [2024-11-18 10:50:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-18 10:50:55,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:55,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986310007] [2024-11-18 10:50:55,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986310007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:55,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:55,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:50:55,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21014193] [2024-11-18 10:50:55,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:55,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:50:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:50:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:50:55,076 INFO L87 Difference]: Start difference. First operand 69531 states and 76605 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:50:56,818 INFO L93 Difference]: Finished difference Result 136920 states and 150558 transitions. [2024-11-18 10:50:56,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:50:56,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2024-11-18 10:50:56,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:50:56,919 INFO L225 Difference]: With dead ends: 136920 [2024-11-18 10:50:56,920 INFO L226 Difference]: Without dead ends: 67391 [2024-11-18 10:50:56,972 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 10:50:56,972 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 623 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:50:56,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 101 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:50:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67391 states. [2024-11-18 10:50:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67391 to 67380. [2024-11-18 10:50:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67380 states, 67379 states have (on average 1.0971222487718726) internal successors, (73923), 67379 states have internal predecessors, (73923), 0 states have call successors, (0), 0 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 10:50:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67380 states to 67380 states and 73923 transitions. [2024-11-18 10:50:58,225 INFO L78 Accepts]: Start accepts. Automaton has 67380 states and 73923 transitions. Word has length 515 [2024-11-18 10:50:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:50:58,225 INFO L471 AbstractCegarLoop]: Abstraction has 67380 states and 73923 transitions. [2024-11-18 10:50:58,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:50:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 67380 states and 73923 transitions. [2024-11-18 10:50:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-18 10:50:58,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:50:58,236 INFO L215 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:50:58,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:50:58,236 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:50:58,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:50:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1522403233, now seen corresponding path program 1 times [2024-11-18 10:50:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:50:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081277895] [2024-11-18 10:50:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:50:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:50:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:50:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2024-11-18 10:50:59,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:50:59,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081277895] [2024-11-18 10:50:59,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081277895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:50:59,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:50:59,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:50:59,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241371257] [2024-11-18 10:50:59,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:50:59,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:50:59,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:50:59,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:50:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:50:59,217 INFO L87 Difference]: Start difference. First operand 67380 states and 73923 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 10:51:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:51:02,002 INFO L93 Difference]: Finished difference Result 146669 states and 160872 transitions. [2024-11-18 10:51:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:51:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 515 [2024-11-18 10:51:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:51:02,100 INFO L225 Difference]: With dead ends: 146669 [2024-11-18 10:51:02,100 INFO L226 Difference]: Without dead ends: 78016 [2024-11-18 10:51:02,125 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 10:51:02,126 INFO L432 NwaCegarLoop]: 719 mSDtfsCounter, 814 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:51:02,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 782 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 10:51:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78016 states. [2024-11-18 10:51:03,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78016 to 66501. [2024-11-18 10:51:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66501 states, 66500 states have (on average 1.0954285714285714) internal successors, (72846), 66500 states have internal predecessors, (72846), 0 states have call successors, (0), 0 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 10:51:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66501 states to 66501 states and 72846 transitions. [2024-11-18 10:51:03,348 INFO L78 Accepts]: Start accepts. Automaton has 66501 states and 72846 transitions. Word has length 515 [2024-11-18 10:51:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:51:03,349 INFO L471 AbstractCegarLoop]: Abstraction has 66501 states and 72846 transitions. [2024-11-18 10:51:03,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 10:51:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 66501 states and 72846 transitions. [2024-11-18 10:51:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2024-11-18 10:51:03,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:51:03,368 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:51:03,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 10:51:03,368 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:51:03,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:51:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 80934831, now seen corresponding path program 1 times [2024-11-18 10:51:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:51:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092038690] [2024-11-18 10:51:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:03,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:51:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 463 proven. 53 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-18 10:51:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:51:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092038690] [2024-11-18 10:51:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092038690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:51:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621247815] [2024-11-18 10:51:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:51:05,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:51:05,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:51:05,526 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 10:51:05,527 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 10:51:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:51:05,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:51:05,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:51:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 479 proven. 82 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-18 10:51:06,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:51:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 479 proven. 82 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-18 10:51:07,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621247815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:51:07,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:51:07,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:51:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080827950] [2024-11-18 10:51:07,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:51:07,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 10:51:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:51:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 10:51:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:51:07,458 INFO L87 Difference]: Start difference. First operand 66501 states and 72846 transitions. Second operand has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)