./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label01.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 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:30:16,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:30:16,757 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:30:16,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:30:16,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:30:16,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:30:16,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:30:16,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:30:16,790 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:30:16,791 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:30:16,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:30:16,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:30:16,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:30:16,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:30:16,798 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:30:16,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:30:16,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:30:16,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:30:16,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:30:16,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:30:16,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:30:16,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:30:16,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:30:16,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:30:16,803 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:30:16,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:30:16,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:30:16,804 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:30:16,804 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:30:16,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:30:16,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:30:16,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:30:16,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:30:16,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:30:16,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:30:16,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:30:16,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:30:16,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:30:16,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:30:16,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:30:16,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:30:16,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:30:16,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 500fb51493d30e1b316117b24f5b2ae67d8f35b2c1172c5ed38f45dce818927e [2024-11-09 19:30:17,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:30:17,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:30:17,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:30:17,082 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:30:17,082 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:30:17,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2024-11-09 19:30:18,458 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:30:19,004 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:30:19,005 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label01.c [2024-11-09 19:30:19,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3be5028/338426cb97204b8ab1fcb8ae24787805/FLAGb89d37c71 [2024-11-09 19:30:19,067 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c3be5028/338426cb97204b8ab1fcb8ae24787805 [2024-11-09 19:30:19,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:30:19,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:30:19,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:30:19,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:30:19,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:30:19,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:30:19" (1/1) ... [2024-11-09 19:30:19,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457407f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:19, skipping insertion in model container [2024-11-09 19:30:19,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:30:19" (1/1) ... [2024-11-09 19:30:19,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:30:19,524 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_label01.c[7003,7016] [2024-11-09 19:30:20,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:30:20,516 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:30:20,547 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_label01.c[7003,7016] [2024-11-09 19:30:21,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:30:21,042 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:30:21,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21 WrapperNode [2024-11-09 19:30:21,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:30:21,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:30:21,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:30:21,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:30:21,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:21,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:21,660 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-09 19:30:21,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:30:21,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:30:21,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:30:21,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:30:21,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:21,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:21,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,012 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:30:22,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,233 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:30:22,431 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:30:22,432 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:30:22,432 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:30:22,433 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (1/1) ... [2024-11-09 19:30:22,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:30:22,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:30:22,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:30:22,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:30:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:30:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:30:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:30:22,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:30:22,574 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:30:22,575 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:30:28,764 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-09 19:30:28,765 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:30:28,766 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:30:29,189 INFO L? ?]: Removed 2111 outVars from TransFormulas that were not future-live. [2024-11-09 19:30:29,189 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:30:29,231 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:30:29,231 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:30:29,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:30:29 BoogieIcfgContainer [2024-11-09 19:30:29,232 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:30:29,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:30:29,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:30:29,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:30:29,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:30:19" (1/3) ... [2024-11-09 19:30:29,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52443dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:30:29, skipping insertion in model container [2024-11-09 19:30:29,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:21" (2/3) ... [2024-11-09 19:30:29,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52443dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:30:29, skipping insertion in model container [2024-11-09 19:30:29,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:30:29" (3/3) ... [2024-11-09 19:30:29,240 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label01.c [2024-11-09 19:30:29,255 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:30:29,256 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:30:29,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:30:29,370 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;@72bc0680, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:30:29,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:30:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 19:30:29,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:29,390 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] [2024-11-09 19:30:29,391 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:29,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash 675451001, now seen corresponding path program 1 times [2024-11-09 19:30:29,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:29,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14220345] [2024-11-09 19:30:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:29,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:29,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:29,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14220345] [2024-11-09 19:30:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14220345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:29,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118435231] [2024-11-09 19:30:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:29,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:29,860 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 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 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:35,126 INFO L93 Difference]: Finished difference Result 3088 states and 7843 transitions. [2024-11-09 19:30:35,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-09 19:30:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:35,156 INFO L225 Difference]: With dead ends: 3088 [2024-11-09 19:30:35,156 INFO L226 Difference]: Without dead ends: 1902 [2024-11-09 19:30:35,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:35,169 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 1706 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:35,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 642 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-09 19:30:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2024-11-09 19:30:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1897. [2024-11-09 19:30:35,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1896 states have (on average 2.4915611814345993) internal successors, (4724), 1896 states have internal predecessors, (4724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 4724 transitions. [2024-11-09 19:30:35,310 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 4724 transitions. Word has length 51 [2024-11-09 19:30:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:35,311 INFO L471 AbstractCegarLoop]: Abstraction has 1897 states and 4724 transitions. [2024-11-09 19:30:35,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 4724 transitions. [2024-11-09 19:30:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-09 19:30:35,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:35,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:35,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:30:35,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:35,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:35,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2118668708, now seen corresponding path program 1 times [2024-11-09 19:30:35,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269925308] [2024-11-09 19:30:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:35,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269925308] [2024-11-09 19:30:35,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269925308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:35,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:35,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:35,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748136954] [2024-11-09 19:30:35,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:35,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:35,866 INFO L87 Difference]: Start difference. First operand 1897 states and 4724 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:41,103 INFO L93 Difference]: Finished difference Result 5445 states and 13870 transitions. [2024-11-09 19:30:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-11-09 19:30:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:41,121 INFO L225 Difference]: With dead ends: 5445 [2024-11-09 19:30:41,122 INFO L226 Difference]: Without dead ends: 3550 [2024-11-09 19:30:41,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:41,127 INFO L432 NwaCegarLoop]: 747 mSDtfsCounter, 1531 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:41,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 885 Invalid, 4920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-09 19:30:41,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2024-11-09 19:30:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3489. [2024-11-09 19:30:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3489 states, 3488 states have (on average 2.406823394495413) internal successors, (8395), 3488 states have internal predecessors, (8395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 8395 transitions. [2024-11-09 19:30:41,201 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 8395 transitions. Word has length 117 [2024-11-09 19:30:41,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:41,202 INFO L471 AbstractCegarLoop]: Abstraction has 3489 states and 8395 transitions. [2024-11-09 19:30:41,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 8395 transitions. [2024-11-09 19:30:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 19:30:41,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:41,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:41,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:30:41,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:41,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1714028292, now seen corresponding path program 1 times [2024-11-09 19:30:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8924169] [2024-11-09 19:30:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:41,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:41,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8924169] [2024-11-09 19:30:41,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8924169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:41,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:41,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:41,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988507732] [2024-11-09 19:30:41,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:41,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:41,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:41,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:41,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:41,357 INFO L87 Difference]: Start difference. First operand 3489 states and 8395 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:46,320 INFO L93 Difference]: Finished difference Result 10164 states and 24767 transitions. [2024-11-09 19:30:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-11-09 19:30:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:46,347 INFO L225 Difference]: With dead ends: 10164 [2024-11-09 19:30:46,348 INFO L226 Difference]: Without dead ends: 6677 [2024-11-09 19:30:46,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:46,354 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 1518 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 4723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 3943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:46,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1205 Invalid, 4723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 3943 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 19:30:46,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6677 states. [2024-11-09 19:30:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 6661. [2024-11-09 19:30:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 2.2372372372372373) internal successors, (14900), 6660 states have internal predecessors, (14900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 14900 transitions. [2024-11-09 19:30:46,486 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 14900 transitions. Word has length 118 [2024-11-09 19:30:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:46,487 INFO L471 AbstractCegarLoop]: Abstraction has 6661 states and 14900 transitions. [2024-11-09 19:30:46,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 14900 transitions. [2024-11-09 19:30:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 19:30:46,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:46,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:46,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:30:46,489 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:46,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash 945139134, now seen corresponding path program 1 times [2024-11-09 19:30:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:46,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908420355] [2024-11-09 19:30:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:46,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908420355] [2024-11-09 19:30:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908420355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:30:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763779689] [2024-11-09 19:30:46,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:46,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:30:46,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:46,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:30:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:30:46,844 INFO L87 Difference]: Start difference. First operand 6661 states and 14900 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:54,012 INFO L93 Difference]: Finished difference Result 14110 states and 32130 transitions. [2024-11-09 19:30:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:30:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-09 19:30:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:54,037 INFO L225 Difference]: With dead ends: 14110 [2024-11-09 19:30:54,038 INFO L226 Difference]: Without dead ends: 7451 [2024-11-09 19:30:54,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:30:54,047 INFO L432 NwaCegarLoop]: 736 mSDtfsCounter, 4726 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 6299 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 7140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 6299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:54,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4726 Valid, 1035 Invalid, 7140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 6299 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-09 19:30:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2024-11-09 19:30:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 7450. [2024-11-09 19:30:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7450 states, 7449 states have (on average 2.2098268223922672) internal successors, (16461), 7449 states have internal predecessors, (16461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7450 states to 7450 states and 16461 transitions. [2024-11-09 19:30:54,238 INFO L78 Accepts]: Start accepts. Automaton has 7450 states and 16461 transitions. Word has length 138 [2024-11-09 19:30:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:54,239 INFO L471 AbstractCegarLoop]: Abstraction has 7450 states and 16461 transitions. [2024-11-09 19:30:54,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states and 16461 transitions. [2024-11-09 19:30:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 19:30:54,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:54,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:54,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:30:54,242 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:54,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1612462233, now seen corresponding path program 1 times [2024-11-09 19:30:54,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:54,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883176815] [2024-11-09 19:30:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:54,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883176815] [2024-11-09 19:30:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883176815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:54,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:54,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:30:54,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495789280] [2024-11-09 19:30:54,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:54,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:30:54,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:30:54,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:30:54,532 INFO L87 Difference]: Start difference. First operand 7450 states and 16461 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:02,305 INFO L93 Difference]: Finished difference Result 25323 states and 57290 transitions. [2024-11-09 19:31:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:31:02,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2024-11-09 19:31:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:02,349 INFO L225 Difference]: With dead ends: 25323 [2024-11-09 19:31:02,350 INFO L226 Difference]: Without dead ends: 18663 [2024-11-09 19:31:02,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:31:02,361 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 3090 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 8790 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 9427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 8790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:02,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3090 Valid, 1181 Invalid, 9427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 8790 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-09 19:31:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18663 states. [2024-11-09 19:31:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18663 to 18525. [2024-11-09 19:31:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18524 states have (on average 2.1874865039948177) internal successors, (40521), 18524 states have internal predecessors, (40521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 40521 transitions. [2024-11-09 19:31:02,676 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 40521 transitions. Word has length 177 [2024-11-09 19:31:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:02,677 INFO L471 AbstractCegarLoop]: Abstraction has 18525 states and 40521 transitions. [2024-11-09 19:31:02,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 40521 transitions. [2024-11-09 19:31:02,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 19:31:02,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:02,681 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, 2, 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] [2024-11-09 19:31:02,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:31:02,682 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:02,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash 309218694, now seen corresponding path program 1 times [2024-11-09 19:31:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384803307] [2024-11-09 19:31:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:02,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:31:02,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:02,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384803307] [2024-11-09 19:31:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384803307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:02,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:02,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:31:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501688593] [2024-11-09 19:31:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:02,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:02,866 INFO L87 Difference]: Start difference. First operand 18525 states and 40521 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:07,468 INFO L93 Difference]: Finished difference Result 50482 states and 111744 transitions. [2024-11-09 19:31:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:07,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2024-11-09 19:31:07,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:07,532 INFO L225 Difference]: With dead ends: 50482 [2024-11-09 19:31:07,533 INFO L226 Difference]: Without dead ends: 32747 [2024-11-09 19:31:07,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:07,560 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 1663 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3965 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 3965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:07,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 890 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 3965 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 19:31:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32747 states. [2024-11-09 19:31:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32747 to 32736. [2024-11-09 19:31:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32736 states, 32735 states have (on average 2.12711165419276) internal successors, (69631), 32735 states have internal predecessors, (69631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32736 states to 32736 states and 69631 transitions. [2024-11-09 19:31:08,227 INFO L78 Accepts]: Start accepts. Automaton has 32736 states and 69631 transitions. Word has length 220 [2024-11-09 19:31:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:08,227 INFO L471 AbstractCegarLoop]: Abstraction has 32736 states and 69631 transitions. [2024-11-09 19:31:08,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 32736 states and 69631 transitions. [2024-11-09 19:31:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-09 19:31:08,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:08,232 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:31:08,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:31:08,232 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:08,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash -141510542, now seen corresponding path program 1 times [2024-11-09 19:31:08,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:08,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706121804] [2024-11-09 19:31:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:08,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:31:08,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:08,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706121804] [2024-11-09 19:31:08,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706121804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:08,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:08,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:08,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137803574] [2024-11-09 19:31:08,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:08,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:08,479 INFO L87 Difference]: Start difference. First operand 32736 states and 69631 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:12,690 INFO L93 Difference]: Finished difference Result 79669 states and 171887 transitions. [2024-11-09 19:31:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2024-11-09 19:31:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:12,783 INFO L225 Difference]: With dead ends: 79669 [2024-11-09 19:31:12,783 INFO L226 Difference]: Without dead ends: 47723 [2024-11-09 19:31:12,821 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 [2024-11-09 19:31:12,824 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 1536 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 3859 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 4743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 3859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:12,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1042 Invalid, 4743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 3859 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:31:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47723 states. [2024-11-09 19:31:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47723 to 47713. [2024-11-09 19:31:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47713 states, 47712 states have (on average 2.1130742790073778) internal successors, (100819), 47712 states have internal predecessors, (100819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47713 states to 47713 states and 100819 transitions. [2024-11-09 19:31:14,195 INFO L78 Accepts]: Start accepts. Automaton has 47713 states and 100819 transitions. Word has length 271 [2024-11-09 19:31:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:14,195 INFO L471 AbstractCegarLoop]: Abstraction has 47713 states and 100819 transitions. [2024-11-09 19:31:14,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:14,196 INFO L276 IsEmpty]: Start isEmpty. Operand 47713 states and 100819 transitions. [2024-11-09 19:31:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-09 19:31:14,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:14,211 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:31:14,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:31:14,217 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:14,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1728086350, now seen corresponding path program 1 times [2024-11-09 19:31:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337516430] [2024-11-09 19:31:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 19:31:14,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:14,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337516430] [2024-11-09 19:31:14,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337516430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:14,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:14,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:31:14,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072598647] [2024-11-09 19:31:14,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:14,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:14,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:14,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:14,555 INFO L87 Difference]: Start difference. First operand 47713 states and 100819 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:19,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:19,135 INFO L93 Difference]: Finished difference Result 126936 states and 269765 transitions. [2024-11-09 19:31:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:19,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 283 [2024-11-09 19:31:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:19,295 INFO L225 Difference]: With dead ends: 126936 [2024-11-09 19:31:19,295 INFO L226 Difference]: Without dead ends: 80013 [2024-11-09 19:31:19,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:19,347 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 1569 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:19,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1001 Invalid, 4615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:31:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80013 states. [2024-11-09 19:31:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80013 to 76069. [2024-11-09 19:31:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76069 states, 76068 states have (on average 2.07340800336541) internal successors, (157720), 76068 states have internal predecessors, (157720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76069 states to 76069 states and 157720 transitions. [2024-11-09 19:31:20,966 INFO L78 Accepts]: Start accepts. Automaton has 76069 states and 157720 transitions. Word has length 283 [2024-11-09 19:31:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:20,970 INFO L471 AbstractCegarLoop]: Abstraction has 76069 states and 157720 transitions. [2024-11-09 19:31:20,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 76069 states and 157720 transitions. [2024-11-09 19:31:20,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-11-09 19:31:20,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:20,975 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:20,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:31:20,975 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:20,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2082009325, now seen corresponding path program 1 times [2024-11-09 19:31:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114663161] [2024-11-09 19:31:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 19:31:21,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114663161] [2024-11-09 19:31:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114663161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:21,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:21,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782614408] [2024-11-09 19:31:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:21,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:31:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:31:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:31:21,340 INFO L87 Difference]: Start difference. First operand 76069 states and 157720 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:30,131 INFO L93 Difference]: Finished difference Result 205944 states and 428862 transitions. [2024-11-09 19:31:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:31:30,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2024-11-09 19:31:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:30,380 INFO L225 Difference]: With dead ends: 205944 [2024-11-09 19:31:30,381 INFO L226 Difference]: Without dead ends: 130665 [2024-11-09 19:31:30,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:31:30,470 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 3166 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 9492 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 10630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 9492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:30,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 703 Invalid, 10630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 9492 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-09 19:31:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130665 states. [2024-11-09 19:31:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130665 to 128172. [2024-11-09 19:31:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128172 states, 128171 states have (on average 2.0700002340623076) internal successors, (265314), 128171 states have internal predecessors, (265314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128172 states to 128172 states and 265314 transitions. [2024-11-09 19:31:32,832 INFO L78 Accepts]: Start accepts. Automaton has 128172 states and 265314 transitions. Word has length 337 [2024-11-09 19:31:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:32,832 INFO L471 AbstractCegarLoop]: Abstraction has 128172 states and 265314 transitions. [2024-11-09 19:31:32,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:31:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 128172 states and 265314 transitions. [2024-11-09 19:31:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-09 19:31:32,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:32,849 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:31:32,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:31:32,850 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:32,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:32,850 INFO L85 PathProgramCache]: Analyzing trace with hash 465767614, now seen corresponding path program 1 times [2024-11-09 19:31:32,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:32,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878340121] [2024-11-09 19:31:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:32,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 336 proven. 26 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 19:31:33,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878340121] [2024-11-09 19:31:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878340121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:31:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338071473] [2024-11-09 19:31:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:33,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:31:33,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:31:33,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:31:33,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:31:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:34,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:31:34,041 INFO L278 TraceCheckSpWp]: Computing forward predicates...