./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/vogal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/loops/vogal-1.i -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 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:03:26,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:03:26,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:03:26,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:03:26,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:03:26,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:03:26,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:03:26,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:03:26,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:03:26,909 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:03:26,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:03:26,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:03:26,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:03:26,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:03:26,913 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:03:26,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:03:26,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:03:26,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:03:26,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:03:26,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:03:26,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:03:26,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:03:26,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:03:26,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:03:26,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:03:26,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:03:26,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:03:26,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:03:26,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:03:26,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:03:26,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:03:26,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:03:26,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:03:26,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:03:26,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:03:26,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:03:26,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:03:26,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:03:26,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:03:26,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:03:26,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:03:26,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:03:26,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e [2024-11-08 14:03:27,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:03:27,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:03:27,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:03:27,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:03:27,191 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:03:27,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/vogal-1.i [2024-11-08 14:03:28,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:03:28,909 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:03:28,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/vogal-1.i [2024-11-08 14:03:28,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a989f3ff/85ec1ed4f1e64bacb07c8a464ab20279/FLAGedf0a678d [2024-11-08 14:03:28,930 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a989f3ff/85ec1ed4f1e64bacb07c8a464ab20279 [2024-11-08 14:03:28,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:03:28,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:03:28,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:03:28,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:03:28,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:03:28,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:03:28" (1/1) ... [2024-11-08 14:03:28,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b0c662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:28, skipping insertion in model container [2024-11-08 14:03:28,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:03:28" (1/1) ... [2024-11-08 14:03:28,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:03:29,157 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/loops/vogal-1.i[895,908] [2024-11-08 14:03:29,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:03:29,193 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:03:29,204 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/loops/vogal-1.i[895,908] [2024-11-08 14:03:29,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:03:29,235 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:03:29,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29 WrapperNode [2024-11-08 14:03:29,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:03:29,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:03:29,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:03:29,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:03:29,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,281 INFO L138 Inliner]: procedures = 18, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 130 [2024-11-08 14:03:29,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:03:29,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:03:29,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:03:29,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:03:29,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,317 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 6, 14]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-11-08 14:03:29,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:03:29,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:03:29,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:03:29,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:03:29,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (1/1) ... [2024-11-08 14:03:29,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:03:29,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:29,382 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) [2024-11-08 14:03:29,387 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 [2024-11-08 14:03:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:03:29,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:03:29,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 14:03:29,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 14:03:29,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-08 14:03:29,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-08 14:03:29,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-08 14:03:29,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 14:03:29,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 14:03:29,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 14:03:29,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 14:03:29,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:03:29,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:03:29,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 14:03:29,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 14:03:29,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 14:03:29,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 14:03:29,524 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:03:29,526 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:03:29,769 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-08 14:03:29,769 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:03:29,784 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:03:29,785 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-08 14:03:29,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:03:29 BoogieIcfgContainer [2024-11-08 14:03:29,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:03:29,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:03:29,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:03:29,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:03:29,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:03:28" (1/3) ... [2024-11-08 14:03:29,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a39c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:03:29, skipping insertion in model container [2024-11-08 14:03:29,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:03:29" (2/3) ... [2024-11-08 14:03:29,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a39c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:03:29, skipping insertion in model container [2024-11-08 14:03:29,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:03:29" (3/3) ... [2024-11-08 14:03:29,796 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2024-11-08 14:03:29,812 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:03:29,812 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:03:29,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:03:29,877 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;@c603265, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:03:29,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:03:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 14:03:29,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:29,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:29,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:29,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash 388073842, now seen corresponding path program 1 times [2024-11-08 14:03:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383016404] [2024-11-08 14:03:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:29,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:03:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:30,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383016404] [2024-11-08 14:03:30,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383016404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:03:30,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:03:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:03:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267030078] [2024-11-08 14:03:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:03:30,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:03:30,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:03:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:03:30,196 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:30,216 INFO L93 Difference]: Finished difference Result 54 states and 82 transitions. [2024-11-08 14:03:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:03:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-08 14:03:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:30,226 INFO L225 Difference]: With dead ends: 54 [2024-11-08 14:03:30,227 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 14:03:30,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:03:30,236 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:30,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:03:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 14:03:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-08 14:03:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:30,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-08 14:03:30,277 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2024-11-08 14:03:30,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:30,278 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-08 14:03:30,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:30,278 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-08 14:03:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 14:03:30,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:30,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:30,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:03:30,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:30,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:30,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2016618829, now seen corresponding path program 1 times [2024-11-08 14:03:30,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:30,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039707837] [2024-11-08 14:03:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:03:30,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:30,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039707837] [2024-11-08 14:03:30,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039707837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:03:30,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:03:30,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 14:03:30,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636283319] [2024-11-08 14:03:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:03:30,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 14:03:30,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 14:03:30,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 14:03:30,552 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:30,615 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-11-08 14:03:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 14:03:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 14:03:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:30,617 INFO L225 Difference]: With dead ends: 63 [2024-11-08 14:03:30,619 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 14:03:30,620 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 [2024-11-08 14:03:30,621 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:30,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:03:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 14:03:30,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 26. [2024-11-08 14:03:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-08 14:03:30,631 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 15 [2024-11-08 14:03:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:30,632 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-08 14:03:30,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-08 14:03:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 14:03:30,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:30,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:30,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:03:30,634 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:30,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2094228111, now seen corresponding path program 1 times [2024-11-08 14:03:30,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:30,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462359556] [2024-11-08 14:03:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:30,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:03:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:30,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462359556] [2024-11-08 14:03:30,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462359556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:30,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222265394] [2024-11-08 14:03:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:30,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:30,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:30,853 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) [2024-11-08 14:03:30,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:03:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:30,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 14:03:30,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:03:31,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:03:31,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222265394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:03:31,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:03:31,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-08 14:03:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904817240] [2024-11-08 14:03:31,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:03:31,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:03:31,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:03:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:03:31,037 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:31,074 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-11-08 14:03:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:03:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-08 14:03:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:31,075 INFO L225 Difference]: With dead ends: 49 [2024-11-08 14:03:31,075 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 14:03:31,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:03:31,076 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:31,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 104 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:03:31,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 14:03:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2024-11-08 14:03:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2024-11-08 14:03:31,087 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 17 [2024-11-08 14:03:31,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:31,088 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2024-11-08 14:03:31,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-11-08 14:03:31,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 14:03:31,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:31,090 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] [2024-11-08 14:03:31,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 14:03:31,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:31,291 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:31,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2138024952, now seen corresponding path program 1 times [2024-11-08 14:03:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:31,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114412938] [2024-11-08 14:03:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:03:31,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:31,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114412938] [2024-11-08 14:03:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114412938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465955670] [2024-11-08 14:03:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:31,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:31,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:31,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:31,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:03:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:31,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:03:31,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:03:31,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:03:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465955670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:03:31,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:03:31,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 14:03:31,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644110086] [2024-11-08 14:03:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:03:31,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:03:31,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:31,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:03:31,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:03:31,613 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:31,662 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2024-11-08 14:03:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:03:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-11-08 14:03:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:31,664 INFO L225 Difference]: With dead ends: 70 [2024-11-08 14:03:31,664 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 14:03:31,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:03:31,666 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:31,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:03:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 14:03:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-08 14:03:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2024-11-08 14:03:31,677 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 23 [2024-11-08 14:03:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:31,677 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2024-11-08 14:03:31,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2024-11-08 14:03:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 14:03:31,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:31,678 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:31,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 14:03:31,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-08 14:03:31,879 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:31,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1093571635, now seen corresponding path program 1 times [2024-11-08 14:03:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:31,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885419245] [2024-11-08 14:03:31,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:31,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:03:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885419245] [2024-11-08 14:03:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885419245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557033452] [2024-11-08 14:03:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:32,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:32,051 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:32,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:03:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:32,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 14:03:32,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:03:32,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:03:32,410 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 14:03:32,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2024-11-08 14:03:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:03:32,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557033452] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:32,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:03:32,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 8] total 12 [2024-11-08 14:03:32,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551830949] [2024-11-08 14:03:32,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:03:32,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 14:03:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 14:03:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 14:03:32,437 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:32,630 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2024-11-08 14:03:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:03:32,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-08 14:03:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:32,632 INFO L225 Difference]: With dead ends: 61 [2024-11-08 14:03:32,635 INFO L226 Difference]: Without dead ends: 40 [2024-11-08 14:03:32,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-08 14:03:32,636 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:32,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 114 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:03:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-08 14:03:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-08 14:03:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2024-11-08 14:03:32,643 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 24 [2024-11-08 14:03:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:32,644 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2024-11-08 14:03:32,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2024-11-08 14:03:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 14:03:32,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:32,645 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:32,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 14:03:32,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:32,846 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:32,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1875229501, now seen corresponding path program 1 times [2024-11-08 14:03:32,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:32,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141125176] [2024-11-08 14:03:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:32,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 14:03:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:32,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141125176] [2024-11-08 14:03:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141125176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:32,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377469365] [2024-11-08 14:03:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:32,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:32,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:32,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:32,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:03:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:33,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 14:03:33,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:33,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-08 14:03:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:03:33,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:03:33,269 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 14:03:33,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-11-08 14:03:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:03:33,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377469365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:03:33,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:03:33,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 12 [2024-11-08 14:03:33,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475310509] [2024-11-08 14:03:33,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:03:33,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 14:03:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 14:03:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 14:03:33,296 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 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) [2024-11-08 14:03:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:33,460 INFO L93 Difference]: Finished difference Result 125 states and 169 transitions. [2024-11-08 14:03:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 14:03:33,461 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 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 25 [2024-11-08 14:03:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:33,461 INFO L225 Difference]: With dead ends: 125 [2024-11-08 14:03:33,461 INFO L226 Difference]: Without dead ends: 90 [2024-11-08 14:03:33,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:03:33,463 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 129 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:33,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 126 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:03:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-08 14:03:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 44. [2024-11-08 14:03:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-11-08 14:03:33,478 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 25 [2024-11-08 14:03:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:33,478 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-11-08 14:03:33,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 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) [2024-11-08 14:03:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-11-08 14:03:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 14:03:33,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:33,479 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:33,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 14:03:33,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:33,680 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:33,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash -90463216, now seen corresponding path program 1 times [2024-11-08 14:03:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011879793] [2024-11-08 14:03:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 14:03:33,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:33,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011879793] [2024-11-08 14:03:33,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011879793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:33,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127592023] [2024-11-08 14:03:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:33,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:33,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:33,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:03:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:33,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 14:03:33,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:33,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2024-11-08 14:03:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 14:03:36,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:03:37,745 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 14:03:37,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-11-08 14:03:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 14:03:37,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127592023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:03:37,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:03:37,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 12] total 23 [2024-11-08 14:03:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946528285] [2024-11-08 14:03:37,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:03:37,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 14:03:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:37,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 14:03:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-08 14:03:37,839 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:42,787 INFO L93 Difference]: Finished difference Result 157 states and 211 transitions. [2024-11-08 14:03:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 14:03:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 28 [2024-11-08 14:03:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:42,790 INFO L225 Difference]: With dead ends: 157 [2024-11-08 14:03:42,790 INFO L226 Difference]: Without dead ends: 120 [2024-11-08 14:03:42,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 14:03:42,791 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 283 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:42,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 260 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 14:03:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-08 14:03:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 47. [2024-11-08 14:03:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-08 14:03:42,808 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 28 [2024-11-08 14:03:42,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:42,809 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-08 14:03:42,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-08 14:03:42,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 14:03:42,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:42,810 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:42,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 14:03:43,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:43,012 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:43,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash -926448804, now seen corresponding path program 1 times [2024-11-08 14:03:43,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:43,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616087956] [2024-11-08 14:03:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:03:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616087956] [2024-11-08 14:03:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616087956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535181923] [2024-11-08 14:03:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:43,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:43,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:43,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 14:03:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:43,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 14:03:43,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 14:03:43,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:03:43,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535181923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:03:43,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:03:43,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 14:03:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948520720] [2024-11-08 14:03:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:03:43,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 14:03:43,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 14:03:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:03:43,288 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:43,318 INFO L93 Difference]: Finished difference Result 89 states and 119 transitions. [2024-11-08 14:03:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 14:03:43,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 33 [2024-11-08 14:03:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:43,320 INFO L225 Difference]: With dead ends: 89 [2024-11-08 14:03:43,320 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 14:03:43,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:03:43,322 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:43,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:03:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 14:03:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-08 14:03:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-08 14:03:43,338 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 33 [2024-11-08 14:03:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:43,339 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-08 14:03:43,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-08 14:03:43,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 14:03:43,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:43,341 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:43,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 14:03:43,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:43,542 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:43,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1076823445, now seen corresponding path program 1 times [2024-11-08 14:03:43,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:43,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022209898] [2024-11-08 14:03:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 14:03:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:43,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022209898] [2024-11-08 14:03:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022209898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:43,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751262706] [2024-11-08 14:03:43,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:43,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:43,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:43,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:43,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 14:03:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:43,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 14:03:43,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 14:03:43,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:03:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 14:03:43,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751262706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:03:43,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:03:43,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2024-11-08 14:03:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855665288] [2024-11-08 14:03:43,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:03:43,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 14:03:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 14:03:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:03:43,817 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:44,194 INFO L93 Difference]: Finished difference Result 306 states and 427 transitions. [2024-11-08 14:03:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 14:03:44,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-08 14:03:44,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:44,197 INFO L225 Difference]: With dead ends: 306 [2024-11-08 14:03:44,197 INFO L226 Difference]: Without dead ends: 264 [2024-11-08 14:03:44,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:03:44,198 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 272 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:44,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 241 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:03:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-08 14:03:44,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 65. [2024-11-08 14:03:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2024-11-08 14:03:44,218 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 36 [2024-11-08 14:03:44,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:44,218 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2024-11-08 14:03:44,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2024-11-08 14:03:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 14:03:44,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:44,220 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:03:44,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 14:03:44,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:44,421 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:44,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 370373592, now seen corresponding path program 2 times [2024-11-08 14:03:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504668395] [2024-11-08 14:03:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:03:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504668395] [2024-11-08 14:03:44,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504668395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781976829] [2024-11-08 14:03:44,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:03:44,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:44,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:44,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 14:03:44,727 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:03:44,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:03:44,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 14:03:44,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:03:44,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:03:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 14:03:45,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781976829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:03:45,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:03:45,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 9] total 20 [2024-11-08 14:03:45,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513884421] [2024-11-08 14:03:45,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:03:45,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 14:03:45,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:45,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 14:03:45,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:03:45,015 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:47,178 INFO L93 Difference]: Finished difference Result 917 states and 1238 transitions. [2024-11-08 14:03:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-08 14:03:47,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 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 44 [2024-11-08 14:03:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:47,182 INFO L225 Difference]: With dead ends: 917 [2024-11-08 14:03:47,182 INFO L226 Difference]: Without dead ends: 848 [2024-11-08 14:03:47,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=501, Invalid=4611, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 14:03:47,186 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 1179 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:47,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 2523 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 14:03:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-08 14:03:47,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 111. [2024-11-08 14:03:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3) internal successors, (143), 110 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 143 transitions. [2024-11-08 14:03:47,225 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 143 transitions. Word has length 44 [2024-11-08 14:03:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:47,227 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 143 transitions. [2024-11-08 14:03:47,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 143 transitions. [2024-11-08 14:03:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:03:47,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:47,231 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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] [2024-11-08 14:03:47,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 14:03:47,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 14:03:47,432 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:47,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash -528372772, now seen corresponding path program 1 times [2024-11-08 14:03:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:47,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739816934] [2024-11-08 14:03:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 14:03:48,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739816934] [2024-11-08 14:03:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739816934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876875916] [2024-11-08 14:03:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:48,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:48,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:48,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:48,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 14:03:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:48,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 14:03:48,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:03:49,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:03:49,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 144 [2024-11-08 14:03:50,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:03:50,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 50 [2024-11-08 14:03:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 14:03:50,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:03:51,482 INFO L349 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2024-11-08 14:03:51,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 1 [2024-11-08 14:03:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 14:03:51,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876875916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:03:51,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:03:51,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 13] total 32 [2024-11-08 14:03:51,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279490105] [2024-11-08 14:03:51,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:03:51,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 14:03:51,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:03:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 14:03:51,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2024-11-08 14:03:51,486 INFO L87 Difference]: Start difference. First operand 111 states and 143 transitions. Second operand has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:54,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 14:03:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:03:58,621 INFO L93 Difference]: Finished difference Result 434 states and 578 transitions. [2024-11-08 14:03:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 14:03:58,622 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 0 states have call successors, (0), 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 46 [2024-11-08 14:03:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:03:58,624 INFO L225 Difference]: With dead ends: 434 [2024-11-08 14:03:58,624 INFO L226 Difference]: Without dead ends: 354 [2024-11-08 14:03:58,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=918, Invalid=4632, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 14:03:58,628 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 280 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 14:03:58,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 402 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 14:03:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-08 14:03:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 219. [2024-11-08 14:03:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.275229357798165) internal successors, (278), 218 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2024-11-08 14:03:58,696 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 46 [2024-11-08 14:03:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:03:58,696 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2024-11-08 14:03:58,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.90625) internal successors, (93), 32 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:03:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2024-11-08 14:03:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:03:58,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:03:58,698 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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] [2024-11-08 14:03:58,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 14:03:58,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:58,899 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:03:58,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:03:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash -785729316, now seen corresponding path program 1 times [2024-11-08 14:03:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:03:58,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619116745] [2024-11-08 14:03:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:03:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 14:03:59,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:03:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619116745] [2024-11-08 14:03:59,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619116745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:03:59,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667532746] [2024-11-08 14:03:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:03:59,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:03:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:03:59,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:03:59,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 14:03:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:03:59,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 14:03:59,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:00,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-08 14:04:00,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-08 14:04:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 14:04:00,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:00,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:00,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2024-11-08 14:04:00,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:00,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2024-11-08 14:04:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 14:04:00,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667532746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:00,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:00,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 13] total 28 [2024-11-08 14:04:00,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30564608] [2024-11-08 14:04:00,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:00,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 14:04:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 14:04:00,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2024-11-08 14:04:00,943 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:05,080 INFO L93 Difference]: Finished difference Result 811 states and 1072 transitions. [2024-11-08 14:04:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-08 14:04:05,080 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 0 states have call successors, (0), 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 46 [2024-11-08 14:04:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:05,083 INFO L225 Difference]: With dead ends: 811 [2024-11-08 14:04:05,083 INFO L226 Difference]: Without dead ends: 709 [2024-11-08 14:04:05,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2600 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1469, Invalid=7087, Unknown=0, NotChecked=0, Total=8556 [2024-11-08 14:04:05,089 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 525 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:05,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 277 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:04:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-08 14:04:05,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 360. [2024-11-08 14:04:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.2367688022284122) internal successors, (444), 359 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 444 transitions. [2024-11-08 14:04:05,194 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 444 transitions. Word has length 46 [2024-11-08 14:04:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:05,195 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 444 transitions. [2024-11-08 14:04:05,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 444 transitions. [2024-11-08 14:04:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:04:05,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:05,196 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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] [2024-11-08 14:04:05,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 14:04:05,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 14:04:05,397 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:05,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash 152494492, now seen corresponding path program 1 times [2024-11-08 14:04:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:05,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064041857] [2024-11-08 14:04:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:05,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 14:04:06,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064041857] [2024-11-08 14:04:06,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064041857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126190751] [2024-11-08 14:04:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:06,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:06,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:06,843 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:06,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 14:04:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:06,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 14:04:06,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:07,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 14:04:07,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 14:04:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 14:04:07,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:07,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:07,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 55 [2024-11-08 14:04:07,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:07,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2024-11-08 14:04:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 14:04:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126190751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:08,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:08,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 32 [2024-11-08 14:04:08,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259578807] [2024-11-08 14:04:08,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:08,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 14:04:08,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 14:04:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-08 14:04:08,038 INFO L87 Difference]: Start difference. First operand 360 states and 444 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:09,313 INFO L93 Difference]: Finished difference Result 778 states and 943 transitions. [2024-11-08 14:04:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 14:04:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 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 46 [2024-11-08 14:04:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:09,317 INFO L225 Difference]: With dead ends: 778 [2024-11-08 14:04:09,317 INFO L226 Difference]: Without dead ends: 560 [2024-11-08 14:04:09,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=589, Invalid=2273, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 14:04:09,319 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 273 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:09,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 328 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:04:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-08 14:04:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 413. [2024-11-08 14:04:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.2257281553398058) internal successors, (505), 412 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 505 transitions. [2024-11-08 14:04:09,490 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 505 transitions. Word has length 46 [2024-11-08 14:04:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:09,490 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 505 transitions. [2024-11-08 14:04:09,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 505 transitions. [2024-11-08 14:04:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:04:09,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:09,491 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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] [2024-11-08 14:04:09,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 14:04:09,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 14:04:09,696 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:09,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash -404220840, now seen corresponding path program 2 times [2024-11-08 14:04:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237341539] [2024-11-08 14:04:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 14:04:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237341539] [2024-11-08 14:04:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237341539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519044768] [2024-11-08 14:04:10,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:04:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:10,808 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:10,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 14:04:10,928 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:04:10,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:04:10,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 14:04:10,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:11,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 14:04:11,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 14:04:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 14:04:11,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:11,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:11,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 57 [2024-11-08 14:04:11,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:11,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 35 [2024-11-08 14:04:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 14:04:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519044768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:11,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:11,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 13] total 39 [2024-11-08 14:04:11,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703134871] [2024-11-08 14:04:11,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:11,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 14:04:11,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 14:04:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1224, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 14:04:11,827 INFO L87 Difference]: Start difference. First operand 413 states and 505 transitions. Second operand has 39 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:14,255 INFO L93 Difference]: Finished difference Result 1228 states and 1505 transitions. [2024-11-08 14:04:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 14:04:14,256 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 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 46 [2024-11-08 14:04:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:14,259 INFO L225 Difference]: With dead ends: 1228 [2024-11-08 14:04:14,259 INFO L226 Difference]: Without dead ends: 704 [2024-11-08 14:04:14,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1053, Invalid=4799, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 14:04:14,261 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 302 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:14,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 461 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:04:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-08 14:04:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 519. [2024-11-08 14:04:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.2065637065637065) internal successors, (625), 518 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 625 transitions. [2024-11-08 14:04:14,421 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 625 transitions. Word has length 46 [2024-11-08 14:04:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:14,422 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 625 transitions. [2024-11-08 14:04:14,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 39 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 625 transitions. [2024-11-08 14:04:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 14:04:14,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:14,423 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 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] [2024-11-08 14:04:14,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 14:04:14,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 14:04:14,624 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:14,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash -239684452, now seen corresponding path program 1 times [2024-11-08 14:04:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:14,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612831493] [2024-11-08 14:04:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:04:15,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612831493] [2024-11-08 14:04:15,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612831493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138206751] [2024-11-08 14:04:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:15,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:15,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:15,433 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:15,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 14:04:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:15,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 14:04:15,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:15,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-08 14:04:15,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-08 14:04:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 14:04:15,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:16,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:16,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2024-11-08 14:04:16,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:16,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2024-11-08 14:04:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 14:04:16,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138206751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:16,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:16,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 36 [2024-11-08 14:04:16,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586351808] [2024-11-08 14:04:16,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:16,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 14:04:16,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 14:04:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 14:04:16,219 INFO L87 Difference]: Start difference. First operand 519 states and 625 transitions. Second operand has 36 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:17,733 INFO L93 Difference]: Finished difference Result 827 states and 989 transitions. [2024-11-08 14:04:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 14:04:17,734 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 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 46 [2024-11-08 14:04:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:17,736 INFO L225 Difference]: With dead ends: 827 [2024-11-08 14:04:17,736 INFO L226 Difference]: Without dead ends: 645 [2024-11-08 14:04:17,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=938, Invalid=4174, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 14:04:17,738 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 288 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:17,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 308 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:04:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-11-08 14:04:17,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 485. [2024-11-08 14:04:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.1900826446280992) internal successors, (576), 484 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 576 transitions. [2024-11-08 14:04:17,906 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 576 transitions. Word has length 46 [2024-11-08 14:04:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:17,906 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 576 transitions. [2024-11-08 14:04:17,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.4722222222222223) internal successors, (89), 36 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 576 transitions. [2024-11-08 14:04:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 14:04:17,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:17,908 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:04:17,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 14:04:18,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 14:04:18,112 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:18,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:18,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1978872450, now seen corresponding path program 1 times [2024-11-08 14:04:18,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:18,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596470164] [2024-11-08 14:04:18,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 14:04:18,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:18,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596470164] [2024-11-08 14:04:18,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596470164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:18,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439648897] [2024-11-08 14:04:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:18,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:18,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:18,316 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:18,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 14:04:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:18,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 14:04:18,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:18,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2024-11-08 14:04:19,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 82 [2024-11-08 14:04:19,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:19,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-08 14:04:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 14:04:19,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:20,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:20,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 60 [2024-11-08 14:04:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 14:04:20,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439648897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:20,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:20,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 21, 21] total 44 [2024-11-08 14:04:20,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513865949] [2024-11-08 14:04:20,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:20,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 14:04:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 14:04:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1558, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 14:04:20,483 INFO L87 Difference]: Start difference. First operand 485 states and 576 transitions. Second operand has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:22,609 INFO L93 Difference]: Finished difference Result 1273 states and 1511 transitions. [2024-11-08 14:04:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 14:04:22,610 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 14:04:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:22,614 INFO L225 Difference]: With dead ends: 1273 [2024-11-08 14:04:22,614 INFO L226 Difference]: Without dead ends: 1202 [2024-11-08 14:04:22,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=987, Invalid=3983, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 14:04:22,616 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 636 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:22,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 634 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 14:04:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2024-11-08 14:04:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 769. [2024-11-08 14:04:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.1940104166666667) internal successors, (917), 768 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 917 transitions. [2024-11-08 14:04:22,899 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 917 transitions. Word has length 55 [2024-11-08 14:04:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:22,899 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 917 transitions. [2024-11-08 14:04:22,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8863636363636362) internal successors, (127), 44 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 917 transitions. [2024-11-08 14:04:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 14:04:22,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:22,901 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:04:22,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 14:04:23,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:23,102 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:23,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash -723438098, now seen corresponding path program 2 times [2024-11-08 14:04:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844425711] [2024-11-08 14:04:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:23,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 14:04:23,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844425711] [2024-11-08 14:04:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844425711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142787458] [2024-11-08 14:04:23,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:04:23,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:23,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:23,867 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:23,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 14:04:24,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:04:24,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:04:24,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 14:04:24,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:24,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 14:04:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 14:04:24,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:25,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:25,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 95 [2024-11-08 14:04:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:04:25,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142787458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:25,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:25,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 21] total 50 [2024-11-08 14:04:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075976303] [2024-11-08 14:04:25,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:25,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 14:04:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:25,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 14:04:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2034, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 14:04:25,810 INFO L87 Difference]: Start difference. First operand 769 states and 917 transitions. Second operand has 50 states, 50 states have (on average 2.34) internal successors, (117), 50 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) [2024-11-08 14:04:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:27,260 INFO L93 Difference]: Finished difference Result 992 states and 1173 transitions. [2024-11-08 14:04:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 14:04:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.34) internal successors, (117), 50 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 56 [2024-11-08 14:04:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:27,264 INFO L225 Difference]: With dead ends: 992 [2024-11-08 14:04:27,264 INFO L226 Difference]: Without dead ends: 909 [2024-11-08 14:04:27,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=953, Invalid=4449, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 14:04:27,266 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 174 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:27,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 446 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:04:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-11-08 14:04:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 747. [2024-11-08 14:04:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.1916890080428955) internal successors, (889), 746 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:27,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 889 transitions. [2024-11-08 14:04:27,517 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 889 transitions. Word has length 56 [2024-11-08 14:04:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:27,517 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 889 transitions. [2024-11-08 14:04:27,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.34) internal successors, (117), 50 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) [2024-11-08 14:04:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 889 transitions. [2024-11-08 14:04:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 14:04:27,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:27,519 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:04:27,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 14:04:27,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 14:04:27,724 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:27,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2062552635, now seen corresponding path program 3 times [2024-11-08 14:04:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:27,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034913608] [2024-11-08 14:04:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 27 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 14:04:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034913608] [2024-11-08 14:04:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034913608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556865016] [2024-11-08 14:04:28,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:04:28,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:28,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:28,018 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:28,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 14:04:28,207 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:04:28,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:04:28,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 14:04:28,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:28,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-08 14:04:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-08 14:04:28,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:28,617 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 14:04:28,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 31 [2024-11-08 14:04:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-08 14:04:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556865016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:28,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 22 [2024-11-08 14:04:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488944375] [2024-11-08 14:04:28,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:28,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 14:04:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 14:04:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:04:28,664 INFO L87 Difference]: Start difference. First operand 747 states and 889 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:29,283 INFO L93 Difference]: Finished difference Result 1682 states and 2017 transitions. [2024-11-08 14:04:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 14:04:29,284 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 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 66 [2024-11-08 14:04:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:29,287 INFO L225 Difference]: With dead ends: 1682 [2024-11-08 14:04:29,287 INFO L226 Difference]: Without dead ends: 1001 [2024-11-08 14:04:29,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-08 14:04:29,288 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:29,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 290 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:04:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-11-08 14:04:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 583. [2024-11-08 14:04:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 1.1804123711340206) internal successors, (687), 582 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 687 transitions. [2024-11-08 14:04:29,519 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 687 transitions. Word has length 66 [2024-11-08 14:04:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:29,520 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 687 transitions. [2024-11-08 14:04:29,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 687 transitions. [2024-11-08 14:04:29,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 14:04:29,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:29,521 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:04:29,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 14:04:29,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 14:04:29,722 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:29,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1786130607, now seen corresponding path program 4 times [2024-11-08 14:04:29,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:29,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388028445] [2024-11-08 14:04:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 38 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 14:04:31,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:31,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388028445] [2024-11-08 14:04:31,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388028445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:31,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923882797] [2024-11-08 14:04:31,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:04:31,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:31,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:31,245 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:31,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 14:04:31,358 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:04:31,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:04:31,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 14:04:31,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:31,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-08 14:04:31,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:31,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-08 14:04:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 14:04:31,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:32,528 INFO L349 Elim1Store]: treesize reduction 33, result has 35.3 percent of original size [2024-11-08 14:04:32,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 122 treesize of output 95 [2024-11-08 14:04:32,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:32,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 60 [2024-11-08 14:04:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 14:04:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923882797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:32,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:32,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 15] total 45 [2024-11-08 14:04:32,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595997425] [2024-11-08 14:04:32,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:32,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 14:04:32,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 14:04:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1687, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 14:04:32,669 INFO L87 Difference]: Start difference. First operand 583 states and 687 transitions. Second operand has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 45 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:34,670 INFO L93 Difference]: Finished difference Result 1236 states and 1454 transitions. [2024-11-08 14:04:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-08 14:04:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 45 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 14:04:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:34,674 INFO L225 Difference]: With dead ends: 1236 [2024-11-08 14:04:34,674 INFO L226 Difference]: Without dead ends: 1027 [2024-11-08 14:04:34,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1003, Invalid=5477, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 14:04:34,676 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 678 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:34,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 561 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:04:34,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-11-08 14:04:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 750. [2024-11-08 14:04:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 1.1722296395193592) internal successors, (878), 749 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 878 transitions. [2024-11-08 14:04:34,959 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 878 transitions. Word has length 67 [2024-11-08 14:04:34,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:34,959 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 878 transitions. [2024-11-08 14:04:34,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 45 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 878 transitions. [2024-11-08 14:04:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 14:04:34,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:34,961 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:04:34,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 14:04:35,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:35,162 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:35,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash -436746483, now seen corresponding path program 5 times [2024-11-08 14:04:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:35,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708916276] [2024-11-08 14:04:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:35,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 48 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-08 14:04:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708916276] [2024-11-08 14:04:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708916276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145916988] [2024-11-08 14:04:36,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:04:36,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:36,842 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:36,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 14:04:37,188 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 14:04:37,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:04:37,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 14:04:37,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:37,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2024-11-08 14:04:37,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-11-08 14:04:37,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 14:04:37,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 14:04:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 14:04:37,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:38,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:38,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2024-11-08 14:04:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 14:04:38,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145916988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:38,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 15] total 48 [2024-11-08 14:04:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786741733] [2024-11-08 14:04:38,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:38,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 14:04:38,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 14:04:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 14:04:38,508 INFO L87 Difference]: Start difference. First operand 750 states and 878 transitions. Second operand has 48 states, 48 states have (on average 3.0833333333333335) internal successors, (148), 48 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:41,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:04:41,934 INFO L93 Difference]: Finished difference Result 1587 states and 1879 transitions. [2024-11-08 14:04:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 14:04:41,934 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.0833333333333335) internal successors, (148), 48 states have internal predecessors, (148), 0 states have call successors, (0), 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 67 [2024-11-08 14:04:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:04:41,938 INFO L225 Difference]: With dead ends: 1587 [2024-11-08 14:04:41,938 INFO L226 Difference]: Without dead ends: 1316 [2024-11-08 14:04:41,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2259 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1209, Invalid=6981, Unknown=0, NotChecked=0, Total=8190 [2024-11-08 14:04:41,939 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 342 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 14:04:41,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 591 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 14:04:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2024-11-08 14:04:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1075. [2024-11-08 14:04:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.1731843575418994) internal successors, (1260), 1074 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1260 transitions. [2024-11-08 14:04:42,429 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1260 transitions. Word has length 67 [2024-11-08 14:04:42,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:04:42,430 INFO L471 AbstractCegarLoop]: Abstraction has 1075 states and 1260 transitions. [2024-11-08 14:04:42,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.0833333333333335) internal successors, (148), 48 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:04:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1260 transitions. [2024-11-08 14:04:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 14:04:42,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:04:42,432 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:04:42,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 14:04:42,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:42,633 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:04:42,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:04:42,634 INFO L85 PathProgramCache]: Analyzing trace with hash 6687953, now seen corresponding path program 6 times [2024-11-08 14:04:42,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:04:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164402496] [2024-11-08 14:04:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:04:42,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:04:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:04:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-08 14:04:44,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:04:44,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164402496] [2024-11-08 14:04:44,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164402496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:04:44,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254937587] [2024-11-08 14:04:44,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:04:44,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:04:44,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:04:44,110 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:04:44,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 14:04:44,350 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 14:04:44,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:04:44,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 14:04:44,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:04:44,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-08 14:04:44,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-08 14:04:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 14:04:44,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:04:44,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:44,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2024-11-08 14:04:45,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 14:04:45,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2024-11-08 14:04:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 25 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 14:04:45,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254937587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:04:45,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:04:45,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 39 [2024-11-08 14:04:45,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646885692] [2024-11-08 14:04:45,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:04:45,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 14:04:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:04:45,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 14:04:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1247, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 14:04:45,146 INFO L87 Difference]: Start difference. First operand 1075 states and 1260 transitions. Second operand has 39 states, 39 states have (on average 3.41025641025641) internal successors, (133), 39 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)