./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/Problem13_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 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:59:20,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:59:20,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:59:20,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:59:20,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:59:20,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:59:20,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:59:20,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:59:20,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:59:20,589 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:59:20,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:59:20,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:59:20,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:59:20,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:59:20,593 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:59:20,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:59:20,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:59:20,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:59:20,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:59:20,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:59:20,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:59:20,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:59:20,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:59:20,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:59:20,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:59:20,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:59:20,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:59:20,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:59:20,600 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:59:20,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:59:20,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:59:20,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:59:20,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:59:20,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:59:20,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:59:20,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:59:20,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:59:20,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:59:20,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:59:20,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:59:20,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:59:20,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:59:20,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 194fbdc3b3886612fc58320fafee97b7b69b69e44501245b99f854c5cffd6315 [2024-11-16 03:59:20,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:59:20,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:59:20,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:59:20,955 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:59:20,955 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:59:20,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2024-11-16 03:59:22,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:59:22,921 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:59:22,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label18.c [2024-11-16 03:59:22,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea043d0a/0ca8466445034a2ba22525b1af1a5e0a/FLAG1e575937b [2024-11-16 03:59:23,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea043d0a/0ca8466445034a2ba22525b1af1a5e0a [2024-11-16 03:59:23,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:59:23,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:59:23,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:59:23,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:59:23,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:59:23,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:23" (1/1) ... [2024-11-16 03:59:23,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f5e6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:23, skipping insertion in model container [2024-11-16 03:59:23,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:23" (1/1) ... [2024-11-16 03:59:23,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:59:23,506 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/Problem13_label18.c[8933,8946] [2024-11-16 03:59:24,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:59:24,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:59:24,297 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/Problem13_label18.c[8933,8946] [2024-11-16 03:59:24,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:59:24,790 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:59:24,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24 WrapperNode [2024-11-16 03:59:24,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:59:24,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:59:24,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:59:24,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:59:24,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:24,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:25,361 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-16 03:59:25,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:59:25,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:59:25,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:59:25,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:59:25,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:25,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:25,628 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:25,982 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]. [2024-11-16 03:59:25,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:25,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:26,229 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:26,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:26,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:26,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:26,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:59:26,476 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:59:26,476 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:59:26,476 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:59:26,477 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (1/1) ... [2024-11-16 03:59:26,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:59:26,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:59:26,514 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) [2024-11-16 03:59:26,518 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 [2024-11-16 03:59:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:59:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:59:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:59:26,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:59:26,640 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:59:26,642 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:59:31,935 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-16 03:59:31,936 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-16 03:59:31,936 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-16 03:59:32,151 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-16 03:59:32,152 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:59:32,197 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:59:32,198 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:59:32,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:59:32 BoogieIcfgContainer [2024-11-16 03:59:32,198 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:59:32,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:59:32,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:59:32,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:59:32,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:59:23" (1/3) ... [2024-11-16 03:59:32,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd02e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:59:32, skipping insertion in model container [2024-11-16 03:59:32,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:24" (2/3) ... [2024-11-16 03:59:32,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd02e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:59:32, skipping insertion in model container [2024-11-16 03:59:32,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:59:32" (3/3) ... [2024-11-16 03:59:32,209 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18.c [2024-11-16 03:59:32,225 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:59:32,226 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:59:32,318 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:59:32,324 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;@c242eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:59:32,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:59:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 03:59:32,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:59:32,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:59:32,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:59:32,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:59:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash 207290104, now seen corresponding path program 1 times [2024-11-16 03:59:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:59:32,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829215293] [2024-11-16 03:59:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:59:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:59:32,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:59:32,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829215293] [2024-11-16 03:59:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829215293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:59:32,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:59:32,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:59:32,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099400130] [2024-11-16 03:59:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:59:32,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:59:32,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:59:32,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:59:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:59:32,836 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 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 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:59:37,785 INFO L93 Difference]: Finished difference Result 3127 states and 5810 transitions. [2024-11-16 03:59:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:59:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-11-16 03:59:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:59:37,811 INFO L225 Difference]: With dead ends: 3127 [2024-11-16 03:59:37,811 INFO L226 Difference]: Without dead ends: 1947 [2024-11-16 03:59:37,817 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 [2024-11-16 03:59:37,820 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 926 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:59:37,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-16 03:59:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2024-11-16 03:59:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1876. [2024-11-16 03:59:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 1.7381333333333333) internal successors, (3259), 1875 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 3259 transitions. [2024-11-16 03:59:37,941 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 3259 transitions. Word has length 65 [2024-11-16 03:59:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:59:37,942 INFO L471 AbstractCegarLoop]: Abstraction has 1876 states and 3259 transitions. [2024-11-16 03:59:37,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 3259 transitions. [2024-11-16 03:59:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-16 03:59:37,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:59:37,948 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:59:37,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:59:37,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:59:37,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:59:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash 356837778, now seen corresponding path program 1 times [2024-11-16 03:59:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:59:37,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723765983] [2024-11-16 03:59:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:37,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:59:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:59:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:59:38,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723765983] [2024-11-16 03:59:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723765983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:59:38,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:59:38,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:59:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550206753] [2024-11-16 03:59:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:59:38,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:59:38,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:59:38,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:59:38,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:59:38,409 INFO L87 Difference]: Start difference. First operand 1876 states and 3259 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:59:42,092 INFO L93 Difference]: Finished difference Result 4611 states and 7971 transitions. [2024-11-16 03:59:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:59:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-16 03:59:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:59:42,107 INFO L225 Difference]: With dead ends: 4611 [2024-11-16 03:59:42,107 INFO L226 Difference]: Without dead ends: 2737 [2024-11-16 03:59:42,110 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 [2024-11-16 03:59:42,112 INFO L432 NwaCegarLoop]: 604 mSDtfsCounter, 815 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:59:42,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 742 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-16 03:59:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2024-11-16 03:59:42,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2674. [2024-11-16 03:59:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.656939768050879) internal successors, (4429), 2673 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4429 transitions. [2024-11-16 03:59:42,181 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4429 transitions. Word has length 131 [2024-11-16 03:59:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:59:42,182 INFO L471 AbstractCegarLoop]: Abstraction has 2674 states and 4429 transitions. [2024-11-16 03:59:42,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4429 transitions. [2024-11-16 03:59:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-16 03:59:42,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:59:42,185 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:59:42,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:59:42,186 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:59:42,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:59:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash 671372286, now seen corresponding path program 1 times [2024-11-16 03:59:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:59:42,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17205208] [2024-11-16 03:59:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:42,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:59:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:59:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:59:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17205208] [2024-11-16 03:59:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17205208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:59:42,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:59:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:59:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574145905] [2024-11-16 03:59:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:59:42,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:59:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:59:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:59:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:59:42,442 INFO L87 Difference]: Start difference. First operand 2674 states and 4429 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:45,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:59:45,789 INFO L93 Difference]: Finished difference Result 7743 states and 12875 transitions. [2024-11-16 03:59:45,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:59:45,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-11-16 03:59:45,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:59:45,813 INFO L225 Difference]: With dead ends: 7743 [2024-11-16 03:59:45,815 INFO L226 Difference]: Without dead ends: 5071 [2024-11-16 03:59:45,821 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 [2024-11-16 03:59:45,825 INFO L432 NwaCegarLoop]: 985 mSDtfsCounter, 871 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 876 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:59:45,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1139 Invalid, 3255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [876 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 03:59:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2024-11-16 03:59:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 5070. [2024-11-16 03:59:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5070 states, 5069 states have (on average 1.45393568751233) internal successors, (7370), 5069 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 7370 transitions. [2024-11-16 03:59:46,007 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 7370 transitions. Word has length 132 [2024-11-16 03:59:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:59:46,012 INFO L471 AbstractCegarLoop]: Abstraction has 5070 states and 7370 transitions. [2024-11-16 03:59:46,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 7370 transitions. [2024-11-16 03:59:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-16 03:59:46,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:59:46,014 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:59:46,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:59:46,014 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:59:46,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:59:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash -96376868, now seen corresponding path program 1 times [2024-11-16 03:59:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:59:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067538071] [2024-11-16 03:59:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:59:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:59:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:59:46,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067538071] [2024-11-16 03:59:46,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067538071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:59:46,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:59:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:59:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19319714] [2024-11-16 03:59:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:59:46,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:59:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:59:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:59:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:59:46,159 INFO L87 Difference]: Start difference. First operand 5070 states and 7370 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:59:49,807 INFO L93 Difference]: Finished difference Result 12530 states and 18448 transitions. [2024-11-16 03:59:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:59:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-11-16 03:59:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:59:49,834 INFO L225 Difference]: With dead ends: 12530 [2024-11-16 03:59:49,834 INFO L226 Difference]: Without dead ends: 7462 [2024-11-16 03:59:49,845 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 [2024-11-16 03:59:49,846 INFO L432 NwaCegarLoop]: 1044 mSDtfsCounter, 872 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:59:49,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1178 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-16 03:59:49,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7462 states. [2024-11-16 03:59:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7462 to 7454. [2024-11-16 03:59:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7454 states, 7453 states have (on average 1.3363746142492956) internal successors, (9960), 7453 states have internal predecessors, (9960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 9960 transitions. [2024-11-16 03:59:49,971 INFO L78 Accepts]: Start accepts. Automaton has 7454 states and 9960 transitions. Word has length 135 [2024-11-16 03:59:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:59:49,972 INFO L471 AbstractCegarLoop]: Abstraction has 7454 states and 9960 transitions. [2024-11-16 03:59:49,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7454 states and 9960 transitions. [2024-11-16 03:59:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-16 03:59:49,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:59:49,975 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:59:49,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:59:49,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:59:49,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:59:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash -551771576, now seen corresponding path program 1 times [2024-11-16 03:59:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:59:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577905870] [2024-11-16 03:59:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:59:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:59:50,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:59:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577905870] [2024-11-16 03:59:50,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577905870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:59:50,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:59:50,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:59:50,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883362819] [2024-11-16 03:59:50,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:59:50,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:59:50,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:59:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:59:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:59:50,105 INFO L87 Difference]: Start difference. First operand 7454 states and 9960 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:59:53,255 INFO L93 Difference]: Finished difference Result 20451 states and 27808 transitions. [2024-11-16 03:59:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:59:53,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2024-11-16 03:59:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:59:53,296 INFO L225 Difference]: With dead ends: 20451 [2024-11-16 03:59:53,296 INFO L226 Difference]: Without dead ends: 13787 [2024-11-16 03:59:53,306 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 [2024-11-16 03:59:53,307 INFO L432 NwaCegarLoop]: 1012 mSDtfsCounter, 805 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:59:53,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1165 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 03:59:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13787 states. [2024-11-16 03:59:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13787 to 12979. [2024-11-16 03:59:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12979 states, 12978 states have (on average 1.2380181846201264) internal successors, (16067), 12978 states have internal predecessors, (16067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12979 states to 12979 states and 16067 transitions. [2024-11-16 03:59:53,505 INFO L78 Accepts]: Start accepts. Automaton has 12979 states and 16067 transitions. Word has length 139 [2024-11-16 03:59:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:59:53,506 INFO L471 AbstractCegarLoop]: Abstraction has 12979 states and 16067 transitions. [2024-11-16 03:59:53,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 12979 states and 16067 transitions. [2024-11-16 03:59:53,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-16 03:59:53,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:59:53,508 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:59:53,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:59:53,508 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:59:53,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:59:53,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1918632588, now seen corresponding path program 1 times [2024-11-16 03:59:53,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:59:53,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78729377] [2024-11-16 03:59:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:53,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:59:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:59:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:59:53,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78729377] [2024-11-16 03:59:53,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78729377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:59:53,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:59:53,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:59:53,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651534783] [2024-11-16 03:59:53,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:59:53,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:59:53,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:59:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:59:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:59:53,798 INFO L87 Difference]: Start difference. First operand 12979 states and 16067 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:59:56,693 INFO L93 Difference]: Finished difference Result 25168 states and 31334 transitions. [2024-11-16 03:59:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:59:56,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-11-16 03:59:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:59:56,715 INFO L225 Difference]: With dead ends: 25168 [2024-11-16 03:59:56,715 INFO L226 Difference]: Without dead ends: 12979 [2024-11-16 03:59:56,726 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 [2024-11-16 03:59:56,728 INFO L432 NwaCegarLoop]: 1085 mSDtfsCounter, 700 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:59:56,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1216 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 03:59:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12979 states. [2024-11-16 03:59:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12979 to 12979. [2024-11-16 03:59:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12979 states, 12978 states have (on average 1.2376329172445677) internal successors, (16062), 12978 states have internal predecessors, (16062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12979 states to 12979 states and 16062 transitions. [2024-11-16 03:59:56,894 INFO L78 Accepts]: Start accepts. Automaton has 12979 states and 16062 transitions. Word has length 155 [2024-11-16 03:59:56,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:59:56,895 INFO L471 AbstractCegarLoop]: Abstraction has 12979 states and 16062 transitions. [2024-11-16 03:59:56,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:59:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand 12979 states and 16062 transitions. [2024-11-16 03:59:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-16 03:59:56,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:59:56,897 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:59:56,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:59:56,897 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:59:56,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:59:56,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1435352590, now seen corresponding path program 1 times [2024-11-16 03:59:56,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:59:56,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336881806] [2024-11-16 03:59:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:56,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:59:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-16 03:59:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:59:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336881806] [2024-11-16 03:59:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336881806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:59:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038380140] [2024-11-16 03:59:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:59:57,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:59:57,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:59:57,238 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) [2024-11-16 03:59:57,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:59:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:59:57,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:59:57,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:59:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:59:57,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:59:57,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038380140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:59:57,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:59:57,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:59:57,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733654742] [2024-11-16 03:59:57,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:59:57,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:59:57,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:59:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:59:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:59:57,458 INFO L87 Difference]: Start difference. First operand 12979 states and 16062 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:00,637 INFO L93 Difference]: Finished difference Result 37004 states and 46120 transitions. [2024-11-16 04:00:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:00,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-11-16 04:00:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:00,682 INFO L225 Difference]: With dead ends: 37004 [2024-11-16 04:00:00,682 INFO L226 Difference]: Without dead ends: 24815 [2024-11-16 04:00:00,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:00:00,703 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 948 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:00,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 646 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:00:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24815 states. [2024-11-16 04:00:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24815 to 20872. [2024-11-16 04:00:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20872 states, 20871 states have (on average 1.2336735182789516) internal successors, (25748), 20871 states have internal predecessors, (25748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20872 states to 20872 states and 25748 transitions. [2024-11-16 04:00:01,164 INFO L78 Accepts]: Start accepts. Automaton has 20872 states and 25748 transitions. Word has length 162 [2024-11-16 04:00:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:01,165 INFO L471 AbstractCegarLoop]: Abstraction has 20872 states and 25748 transitions. [2024-11-16 04:00:01,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 20872 states and 25748 transitions. [2024-11-16 04:00:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-16 04:00:01,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:01,175 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:01,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:00:01,378 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 [2024-11-16 04:00:01,379 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:01,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1927891677, now seen corresponding path program 1 times [2024-11-16 04:00:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111209674] [2024-11-16 04:00:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111209674] [2024-11-16 04:00:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111209674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:01,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:01,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138636850] [2024-11-16 04:00:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:01,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:01,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:01,806 INFO L87 Difference]: Start difference. First operand 20872 states and 25748 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:05,184 INFO L93 Difference]: Finished difference Result 52017 states and 65634 transitions. [2024-11-16 04:00:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:05,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 279 [2024-11-16 04:00:05,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:05,232 INFO L225 Difference]: With dead ends: 52017 [2024-11-16 04:00:05,232 INFO L226 Difference]: Without dead ends: 31935 [2024-11-16 04:00:05,264 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 [2024-11-16 04:00:05,265 INFO L432 NwaCegarLoop]: 1777 mSDtfsCounter, 774 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:05,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1922 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-16 04:00:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31935 states. [2024-11-16 04:00:05,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31935 to 30332. [2024-11-16 04:00:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30332 states, 30331 states have (on average 1.1939270053740398) internal successors, (36213), 30331 states have internal predecessors, (36213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30332 states to 30332 states and 36213 transitions. [2024-11-16 04:00:05,821 INFO L78 Accepts]: Start accepts. Automaton has 30332 states and 36213 transitions. Word has length 279 [2024-11-16 04:00:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:05,823 INFO L471 AbstractCegarLoop]: Abstraction has 30332 states and 36213 transitions. [2024-11-16 04:00:05,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 30332 states and 36213 transitions. [2024-11-16 04:00:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-16 04:00:05,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:05,831 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:05,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:00:05,831 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:05,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash 956189709, now seen corresponding path program 1 times [2024-11-16 04:00:05,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:05,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607380096] [2024-11-16 04:00:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:05,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 04:00:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:06,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607380096] [2024-11-16 04:00:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607380096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:06,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:00:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634736945] [2024-11-16 04:00:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:06,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:00:06,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:00:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:00:06,168 INFO L87 Difference]: Start difference. First operand 30332 states and 36213 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:12,777 INFO L93 Difference]: Finished difference Result 89249 states and 107631 transitions. [2024-11-16 04:00:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:00:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 356 [2024-11-16 04:00:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:12,847 INFO L225 Difference]: With dead ends: 89249 [2024-11-16 04:00:12,847 INFO L226 Difference]: Without dead ends: 59707 [2024-11-16 04:00:12,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:00:12,866 INFO L432 NwaCegarLoop]: 869 mSDtfsCounter, 1720 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 7179 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 8167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 7179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:12,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 1141 Invalid, 8167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 7179 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-16 04:00:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59707 states. [2024-11-16 04:00:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59707 to 59583. [2024-11-16 04:00:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59583 states, 59582 states have (on average 1.1797187069920445) internal successors, (70290), 59582 states have internal predecessors, (70290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59583 states to 59583 states and 70290 transitions. [2024-11-16 04:00:13,504 INFO L78 Accepts]: Start accepts. Automaton has 59583 states and 70290 transitions. Word has length 356 [2024-11-16 04:00:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:13,504 INFO L471 AbstractCegarLoop]: Abstraction has 59583 states and 70290 transitions. [2024-11-16 04:00:13,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 59583 states and 70290 transitions. [2024-11-16 04:00:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-16 04:00:13,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:13,512 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:13,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:00:13,513 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:13,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:13,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1129873966, now seen corresponding path program 1 times [2024-11-16 04:00:13,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:13,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132465844] [2024-11-16 04:00:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:13,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 257 proven. 111 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 04:00:14,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132465844] [2024-11-16 04:00:14,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132465844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:00:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970021519] [2024-11-16 04:00:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:14,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:14,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:14,711 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) [2024-11-16 04:00:14,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:00:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:14,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:00:14,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:00:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-16 04:00:14,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:00:14,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970021519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:14,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:00:14,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 04:00:14,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749096020] [2024-11-16 04:00:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:14,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:00:14,985 INFO L87 Difference]: Start difference. First operand 59583 states and 70290 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:18,729 INFO L93 Difference]: Finished difference Result 168993 states and 199958 transitions. [2024-11-16 04:00:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2024-11-16 04:00:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:18,875 INFO L225 Difference]: With dead ends: 168993 [2024-11-16 04:00:18,875 INFO L226 Difference]: Without dead ends: 110200 [2024-11-16 04:00:18,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:00:18,937 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 1076 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:18,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 928 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:00:19,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110200 states. [2024-11-16 04:00:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110200 to 106230. [2024-11-16 04:00:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106230 states, 106229 states have (on average 1.1504768001204944) internal successors, (122214), 106229 states have internal predecessors, (122214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106230 states to 106230 states and 122214 transitions. [2024-11-16 04:00:20,011 INFO L78 Accepts]: Start accepts. Automaton has 106230 states and 122214 transitions. Word has length 374 [2024-11-16 04:00:20,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:20,012 INFO L471 AbstractCegarLoop]: Abstraction has 106230 states and 122214 transitions. [2024-11-16 04:00:20,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 106230 states and 122214 transitions. [2024-11-16 04:00:20,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-11-16 04:00:20,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:20,024 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:00:20,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 04:00:20,225 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,SelfDestructingSolverStorable9 [2024-11-16 04:00:20,225 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:20,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash -314583623, now seen corresponding path program 1 times [2024-11-16 04:00:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143898183] [2024-11-16 04:00:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:20,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 348 proven. 114 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 04:00:22,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:22,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143898183] [2024-11-16 04:00:22,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143898183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:00:22,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588214244] [2024-11-16 04:00:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:22,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:22,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:22,270 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) [2024-11-16 04:00:22,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:00:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:22,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:00:22,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:00:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-16 04:00:22,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:00:22,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588214244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:22,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:00:22,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-16 04:00:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362990076] [2024-11-16 04:00:22,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:22,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:22,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:22,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:22,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:00:22,640 INFO L87 Difference]: Start difference. First operand 106230 states and 122214 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:25,999 INFO L93 Difference]: Finished difference Result 211667 states and 243631 transitions. [2024-11-16 04:00:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 423 [2024-11-16 04:00:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:26,131 INFO L225 Difference]: With dead ends: 211667 [2024-11-16 04:00:26,132 INFO L226 Difference]: Without dead ends: 106227 [2024-11-16 04:00:26,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:00:26,192 INFO L432 NwaCegarLoop]: 1379 mSDtfsCounter, 1098 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:26,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1464 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 04:00:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106227 states. [2024-11-16 04:00:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106227 to 105433. [2024-11-16 04:00:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105433 states, 105432 states have (on average 1.1088568935427574) internal successors, (116909), 105432 states have internal predecessors, (116909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105433 states to 105433 states and 116909 transitions. [2024-11-16 04:00:27,943 INFO L78 Accepts]: Start accepts. Automaton has 105433 states and 116909 transitions. Word has length 423 [2024-11-16 04:00:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:27,943 INFO L471 AbstractCegarLoop]: Abstraction has 105433 states and 116909 transitions. [2024-11-16 04:00:27,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 105433 states and 116909 transitions. [2024-11-16 04:00:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-11-16 04:00:27,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:27,977 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:27,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:00:28,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:28,179 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:28,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:28,179 INFO L85 PathProgramCache]: Analyzing trace with hash 607825881, now seen corresponding path program 1 times [2024-11-16 04:00:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:28,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644029700] [2024-11-16 04:00:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 534 proven. 114 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-16 04:00:29,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644029700] [2024-11-16 04:00:29,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644029700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:00:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464321687] [2024-11-16 04:00:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:29,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:29,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:29,974 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) [2024-11-16 04:00:29,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 04:00:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:30,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 04:00:30,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:00:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-16 04:00:30,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:00:30,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464321687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:00:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-16 04:00:30,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73960502] [2024-11-16 04:00:30,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:30,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:00:30,339 INFO L87 Difference]: Start difference. First operand 105433 states and 116909 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:33,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:33,973 INFO L93 Difference]: Finished difference Result 243973 states and 273985 transitions. [2024-11-16 04:00:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:33,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 543 [2024-11-16 04:00:33,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:34,141 INFO L225 Difference]: With dead ends: 243973 [2024-11-16 04:00:34,141 INFO L226 Difference]: Without dead ends: 139330 [2024-11-16 04:00:34,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:00:34,200 INFO L432 NwaCegarLoop]: 1692 mSDtfsCounter, 793 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:34,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1828 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:00:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139330 states. [2024-11-16 04:00:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139330 to 139311. [2024-11-16 04:00:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139311 states, 139310 states have (on average 1.102261144210753) internal successors, (153556), 139310 states have internal predecessors, (153556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139311 states to 139311 states and 153556 transitions. [2024-11-16 04:00:36,444 INFO L78 Accepts]: Start accepts. Automaton has 139311 states and 153556 transitions. Word has length 543 [2024-11-16 04:00:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:36,445 INFO L471 AbstractCegarLoop]: Abstraction has 139311 states and 153556 transitions. [2024-11-16 04:00:36,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 139311 states and 153556 transitions. [2024-11-16 04:00:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-16 04:00:36,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:36,472 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:36,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 04:00:36,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:00:36,674 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:36,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1534821224, now seen corresponding path program 1 times [2024-11-16 04:00:36,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246878234] [2024-11-16 04:00:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2024-11-16 04:00:37,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:37,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246878234] [2024-11-16 04:00:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246878234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:37,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:37,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225882012] [2024-11-16 04:00:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:37,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:37,250 INFO L87 Difference]: Start difference. First operand 139311 states and 153556 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)