./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label49.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed3a92c264decf07ef3fe9934b7adac3cfdd66377f9f8a3c9a530596f6e34d7c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:38:58,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:38:58,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:38:58,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:38:58,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:38:58,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:38:58,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:38:58,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:38:58,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:38:58,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:38:58,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:38:58,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:38:58,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:38:58,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:38:58,921 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:38:58,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:38:58,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:38:58,922 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:38:58,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:38:58,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:38:58,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:38:58,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:38:58,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:38:58,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:38:58,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:38:58,927 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:38:58,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:38:58,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:38:58,927 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:38:58,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:38:58,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:38:58,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:38:58,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:38:58,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:38:58,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:38:58,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:38:58,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:38:58,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:38:58,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:38:58,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:38:58,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:38:58,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:38:58,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed3a92c264decf07ef3fe9934b7adac3cfdd66377f9f8a3c9a530596f6e34d7c [2024-11-09 19:38:59,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:38:59,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:38:59,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:38:59,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:38:59,191 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:38:59,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label49.c [2024-11-09 19:39:00,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:39:00,909 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:39:00,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label49.c [2024-11-09 19:39:00,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5155e9257/e976926d2b754271ad0631d6d95f8b07/FLAG7fbccb8b8 [2024-11-09 19:39:00,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5155e9257/e976926d2b754271ad0631d6d95f8b07 [2024-11-09 19:39:00,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:39:00,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:39:00,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:39:00,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:39:00,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:39:00,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:39:00" (1/1) ... [2024-11-09 19:39:00,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69780de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:00, skipping insertion in model container [2024-11-09 19:39:00,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:39:00" (1/1) ... [2024-11-09 19:39:01,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:39:01,297 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label49.c[6042,6055] [2024-11-09 19:39:01,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:39:01,488 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:39:01,514 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label49.c[6042,6055] [2024-11-09 19:39:01,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:39:01,626 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:39:01,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01 WrapperNode [2024-11-09 19:39:01,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:39:01,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:39:01,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:39:01,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:39:01,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,720 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-09 19:39:01,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:39:01,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:39:01,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:39:01,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:39:01,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,791 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:39:01,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,819 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:39:01,850 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:39:01,850 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:39:01,850 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:39:01,851 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (1/1) ... [2024-11-09 19:39:01,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:39:01,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:01,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:39:01,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:39:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:39:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:39:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:39:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:39:01,998 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:39:02,000 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:39:03,436 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2024-11-09 19:39:03,436 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:39:03,456 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:39:03,458 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:39:03,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:39:03 BoogieIcfgContainer [2024-11-09 19:39:03,459 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:39:03,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:39:03,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:39:03,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:39:03,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:39:00" (1/3) ... [2024-11-09 19:39:03,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd2a220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:39:03, skipping insertion in model container [2024-11-09 19:39:03,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:39:01" (2/3) ... [2024-11-09 19:39:03,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd2a220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:39:03, skipping insertion in model container [2024-11-09 19:39:03,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:39:03" (3/3) ... [2024-11-09 19:39:03,468 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label49.c [2024-11-09 19:39:03,485 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:39:03,486 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:39:03,557 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:39:03,564 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;@3b8346ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:39:03,565 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:39:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 19:39:03,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:03,581 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:03,581 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:03,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash 717864728, now seen corresponding path program 1 times [2024-11-09 19:39:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:03,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112758331] [2024-11-09 19:39:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:39:04,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:04,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112758331] [2024-11-09 19:39:04,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112758331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:04,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:04,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:39:04,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251516702] [2024-11-09 19:39:04,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:04,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:04,070 INFO L87 Difference]: Start difference. First operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:05,261 INFO L93 Difference]: Finished difference Result 691 states and 1561 transitions. [2024-11-09 19:39:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:05,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-09 19:39:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:05,276 INFO L225 Difference]: With dead ends: 691 [2024-11-09 19:39:05,277 INFO L226 Difference]: Without dead ends: 363 [2024-11-09 19:39:05,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:05,285 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 272 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:05,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 143 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:39:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-09 19:39:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-09 19:39:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 2.041436464088398) internal successors, (739), 362 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 739 transitions. [2024-11-09 19:39:05,367 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 739 transitions. Word has length 61 [2024-11-09 19:39:05,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:05,370 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 739 transitions. [2024-11-09 19:39:05,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:05,371 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 739 transitions. [2024-11-09 19:39:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-09 19:39:05,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:05,377 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:05,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:39:05,378 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:05,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash -395028759, now seen corresponding path program 1 times [2024-11-09 19:39:05,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305433499] [2024-11-09 19:39:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:39:05,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:05,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305433499] [2024-11-09 19:39:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305433499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:05,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594000079] [2024-11-09 19:39:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:05,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:39:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:39:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:05,845 INFO L87 Difference]: Start difference. First operand 363 states and 739 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:07,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:07,114 INFO L93 Difference]: Finished difference Result 1082 states and 2132 transitions. [2024-11-09 19:39:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:39:07,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-11-09 19:39:07,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:07,121 INFO L225 Difference]: With dead ends: 1082 [2024-11-09 19:39:07,122 INFO L226 Difference]: Without dead ends: 721 [2024-11-09 19:39:07,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:39:07,126 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 760 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:07,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 128 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:39:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-09 19:39:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-09 19:39:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.8875) internal successors, (1359), 720 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1359 transitions. [2024-11-09 19:39:07,167 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1359 transitions. Word has length 141 [2024-11-09 19:39:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:07,168 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1359 transitions. [2024-11-09 19:39:07,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1359 transitions. [2024-11-09 19:39:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-09 19:39:07,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:07,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:07,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:39:07,172 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:07,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1484379383, now seen corresponding path program 1 times [2024-11-09 19:39:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:07,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406908805] [2024-11-09 19:39:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:07,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 19:39:07,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:07,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406908805] [2024-11-09 19:39:07,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406908805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:39:07,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831802044] [2024-11-09 19:39:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:07,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:07,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:07,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:39:07,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:39:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:07,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:39:07,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:39:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 19:39:07,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:39:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831802044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:07,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:39:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 19:39:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822085847] [2024-11-09 19:39:07,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:07,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:39:07,885 INFO L87 Difference]: Start difference. First operand 721 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:08,717 INFO L93 Difference]: Finished difference Result 1261 states and 2412 transitions. [2024-11-09 19:39:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:08,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 167 [2024-11-09 19:39:08,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:08,724 INFO L225 Difference]: With dead ends: 1261 [2024-11-09 19:39:08,724 INFO L226 Difference]: Without dead ends: 1258 [2024-11-09 19:39:08,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:39:08,726 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 204 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:08,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 40 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:39:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-11-09 19:39:08,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 900. [2024-11-09 19:39:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 1.9632925472747498) internal successors, (1765), 899 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1765 transitions. [2024-11-09 19:39:08,755 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1765 transitions. Word has length 167 [2024-11-09 19:39:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:08,756 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1765 transitions. [2024-11-09 19:39:08,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:08,757 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1765 transitions. [2024-11-09 19:39:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-09 19:39:08,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:08,762 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:08,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:39:08,963 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 [2024-11-09 19:39:08,963 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:08,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1349557580, now seen corresponding path program 1 times [2024-11-09 19:39:08,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:08,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290273747] [2024-11-09 19:39:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:08,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 19:39:09,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290273747] [2024-11-09 19:39:09,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290273747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:09,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:09,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:09,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81898435] [2024-11-09 19:39:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:09,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:39:09,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:39:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:09,237 INFO L87 Difference]: Start difference. First operand 900 states and 1765 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:10,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:10,277 INFO L93 Difference]: Finished difference Result 2007 states and 3886 transitions. [2024-11-09 19:39:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:39:10,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-09 19:39:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:10,285 INFO L225 Difference]: With dead ends: 2007 [2024-11-09 19:39:10,286 INFO L226 Difference]: Without dead ends: 1079 [2024-11-09 19:39:10,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:10,288 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 215 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:10,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 128 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:39:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-09 19:39:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2024-11-09 19:39:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.8079777365491652) internal successors, (1949), 1078 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1949 transitions. [2024-11-09 19:39:10,316 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1949 transitions. Word has length 222 [2024-11-09 19:39:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:10,317 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1949 transitions. [2024-11-09 19:39:10,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1949 transitions. [2024-11-09 19:39:10,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-09 19:39:10,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:10,321 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:10,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:39:10,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:10,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2003027474, now seen corresponding path program 1 times [2024-11-09 19:39:10,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151141273] [2024-11-09 19:39:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 115 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:39:10,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:10,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151141273] [2024-11-09 19:39:10,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151141273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:39:10,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449540745] [2024-11-09 19:39:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:10,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:10,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:10,701 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) [2024-11-09 19:39:10,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:39:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:10,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:39:10,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:39:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 19:39:11,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:39:11,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449540745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:11,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:39:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 19:39:11,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958847896] [2024-11-09 19:39:11,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:11,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:11,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:39:11,053 INFO L87 Difference]: Start difference. First operand 1079 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:11,837 INFO L93 Difference]: Finished difference Result 2335 states and 4263 transitions. [2024-11-09 19:39:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 234 [2024-11-09 19:39:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:11,842 INFO L225 Difference]: With dead ends: 2335 [2024-11-09 19:39:11,842 INFO L226 Difference]: Without dead ends: 1258 [2024-11-09 19:39:11,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:39:11,844 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 198 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:11,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 50 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:39:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2024-11-09 19:39:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1079. [2024-11-09 19:39:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.794990723562152) internal successors, (1935), 1078 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1935 transitions. [2024-11-09 19:39:11,865 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1935 transitions. Word has length 234 [2024-11-09 19:39:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:11,865 INFO L471 AbstractCegarLoop]: Abstraction has 1079 states and 1935 transitions. [2024-11-09 19:39:11,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1935 transitions. [2024-11-09 19:39:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-09 19:39:11,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:11,868 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:11,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:39:12,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:12,069 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:12,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash 881746346, now seen corresponding path program 1 times [2024-11-09 19:39:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969564043] [2024-11-09 19:39:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:39:12,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:12,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969564043] [2024-11-09 19:39:12,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969564043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:12,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:12,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:12,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11337048] [2024-11-09 19:39:12,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:12,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:12,351 INFO L87 Difference]: Start difference. First operand 1079 states and 1935 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:13,128 INFO L93 Difference]: Finished difference Result 2872 states and 5188 transitions. [2024-11-09 19:39:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:13,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2024-11-09 19:39:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:13,136 INFO L225 Difference]: With dead ends: 2872 [2024-11-09 19:39:13,136 INFO L226 Difference]: Without dead ends: 1795 [2024-11-09 19:39:13,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:13,139 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:13,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 81 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:39:13,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2024-11-09 19:39:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1616. [2024-11-09 19:39:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.7653250773993807) internal successors, (2851), 1615 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2851 transitions. [2024-11-09 19:39:13,168 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2851 transitions. Word has length 237 [2024-11-09 19:39:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:13,169 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 2851 transitions. [2024-11-09 19:39:13,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2851 transitions. [2024-11-09 19:39:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-09 19:39:13,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:13,173 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:13,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:39:13,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:13,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1448362795, now seen corresponding path program 1 times [2024-11-09 19:39:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:13,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589505130] [2024-11-09 19:39:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:13,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-11-09 19:39:13,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:13,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589505130] [2024-11-09 19:39:13,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589505130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:13,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:13,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:13,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800132317] [2024-11-09 19:39:13,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:13,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:39:13,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:13,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:39:13,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:13,583 INFO L87 Difference]: Start difference. First operand 1616 states and 2851 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:14,469 INFO L93 Difference]: Finished difference Result 3290 states and 5783 transitions. [2024-11-09 19:39:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:39:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 355 [2024-11-09 19:39:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:14,477 INFO L225 Difference]: With dead ends: 3290 [2024-11-09 19:39:14,477 INFO L226 Difference]: Without dead ends: 1795 [2024-11-09 19:39:14,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:39:14,479 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 238 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:14,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 23 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:39:14,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2024-11-09 19:39:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1616. [2024-11-09 19:39:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.720123839009288) internal successors, (2778), 1615 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:14,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2778 transitions. [2024-11-09 19:39:14,509 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2778 transitions. Word has length 355 [2024-11-09 19:39:14,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:14,509 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 2778 transitions. [2024-11-09 19:39:14,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2778 transitions. [2024-11-09 19:39:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-09 19:39:14,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:14,516 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:14,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:39:14,517 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:14,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash -419897428, now seen corresponding path program 1 times [2024-11-09 19:39:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959905019] [2024-11-09 19:39:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-09 19:39:15,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959905019] [2024-11-09 19:39:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959905019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:15,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:15,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504566434] [2024-11-09 19:39:15,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:15,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:15,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:15,012 INFO L87 Difference]: Start difference. First operand 1616 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:15,712 INFO L93 Difference]: Finished difference Result 3946 states and 6819 transitions. [2024-11-09 19:39:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:15,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2024-11-09 19:39:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:15,722 INFO L225 Difference]: With dead ends: 3946 [2024-11-09 19:39:15,722 INFO L226 Difference]: Without dead ends: 2511 [2024-11-09 19:39:15,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:15,726 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:15,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 363 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:39:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-09 19:39:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 1974. [2024-11-09 19:39:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.705524581855043) internal successors, (3365), 1973 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3365 transitions. [2024-11-09 19:39:15,766 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3365 transitions. Word has length 451 [2024-11-09 19:39:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:15,767 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3365 transitions. [2024-11-09 19:39:15,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3365 transitions. [2024-11-09 19:39:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-11-09 19:39:15,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:15,775 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:15,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:39:15,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:15,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash -18625262, now seen corresponding path program 1 times [2024-11-09 19:39:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:15,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697353212] [2024-11-09 19:39:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:15,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-09 19:39:16,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:16,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697353212] [2024-11-09 19:39:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697353212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:16,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221965924] [2024-11-09 19:39:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:16,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:16,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:16,212 INFO L87 Difference]: Start difference. First operand 1974 states and 3365 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:16,839 INFO L93 Difference]: Finished difference Result 4304 states and 7417 transitions. [2024-11-09 19:39:16,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:16,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 458 [2024-11-09 19:39:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:16,848 INFO L225 Difference]: With dead ends: 4304 [2024-11-09 19:39:16,848 INFO L226 Difference]: Without dead ends: 2511 [2024-11-09 19:39:16,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:16,851 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 226 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:16,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 338 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:39:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-09 19:39:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2153. [2024-11-09 19:39:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.7156133828996283) internal successors, (3692), 2152 states have internal predecessors, (3692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:16,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3692 transitions. [2024-11-09 19:39:16,895 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3692 transitions. Word has length 458 [2024-11-09 19:39:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:16,896 INFO L471 AbstractCegarLoop]: Abstraction has 2153 states and 3692 transitions. [2024-11-09 19:39:16,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3692 transitions. [2024-11-09 19:39:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-09 19:39:16,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:16,900 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:16,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:39:16,900 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:16,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2104053934, now seen corresponding path program 1 times [2024-11-09 19:39:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:16,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876494035] [2024-11-09 19:39:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2024-11-09 19:39:17,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:17,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876494035] [2024-11-09 19:39:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876494035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:17,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650426144] [2024-11-09 19:39:17,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:17,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:17,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:17,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:17,178 INFO L87 Difference]: Start difference. First operand 2153 states and 3692 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:17,764 INFO L93 Difference]: Finished difference Result 5020 states and 8668 transitions. [2024-11-09 19:39:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 499 [2024-11-09 19:39:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:17,775 INFO L225 Difference]: With dead ends: 5020 [2024-11-09 19:39:17,776 INFO L226 Difference]: Without dead ends: 3048 [2024-11-09 19:39:17,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:17,779 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 185 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:17,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 56 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:39:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2024-11-09 19:39:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 2869. [2024-11-09 19:39:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2868 states have (on average 1.7105997210599722) internal successors, (4906), 2868 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4906 transitions. [2024-11-09 19:39:17,847 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4906 transitions. Word has length 499 [2024-11-09 19:39:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:17,848 INFO L471 AbstractCegarLoop]: Abstraction has 2869 states and 4906 transitions. [2024-11-09 19:39:17,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4906 transitions. [2024-11-09 19:39:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-09 19:39:17,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:17,854 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:17,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:39:17,855 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:17,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash -463856121, now seen corresponding path program 1 times [2024-11-09 19:39:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066725849] [2024-11-09 19:39:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-09 19:39:18,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:18,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066725849] [2024-11-09 19:39:18,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066725849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:18,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:18,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:39:18,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653109294] [2024-11-09 19:39:18,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:18,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:18,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:18,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:18,466 INFO L87 Difference]: Start difference. First operand 2869 states and 4906 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:19,096 INFO L93 Difference]: Finished difference Result 6273 states and 10816 transitions. [2024-11-09 19:39:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 614 [2024-11-09 19:39:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:19,110 INFO L225 Difference]: With dead ends: 6273 [2024-11-09 19:39:19,110 INFO L226 Difference]: Without dead ends: 3585 [2024-11-09 19:39:19,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:39:19,115 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:19,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 358 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:39:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2024-11-09 19:39:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3406. [2024-11-09 19:39:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 1.7080763582966225) internal successors, (5816), 3405 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 5816 transitions. [2024-11-09 19:39:19,171 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 5816 transitions. Word has length 614 [2024-11-09 19:39:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:19,172 INFO L471 AbstractCegarLoop]: Abstraction has 3406 states and 5816 transitions. [2024-11-09 19:39:19,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 5816 transitions. [2024-11-09 19:39:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2024-11-09 19:39:19,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:19,179 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:19,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:39:19,180 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:19,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1503898408, now seen corresponding path program 1 times [2024-11-09 19:39:19,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:19,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726348635] [2024-11-09 19:39:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 1171 proven. 104 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-09 19:39:20,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:20,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726348635] [2024-11-09 19:39:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726348635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:39:20,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18198098] [2024-11-09 19:39:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:20,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:20,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:20,012 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) [2024-11-09 19:39:20,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:39:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:20,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:39:20,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:39:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2024-11-09 19:39:20,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:39:20,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18198098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:20,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:39:20,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:39:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349964996] [2024-11-09 19:39:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:20,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:20,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:20,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:20,325 INFO L87 Difference]: Start difference. First operand 3406 states and 5816 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:20,856 INFO L93 Difference]: Finished difference Result 7884 states and 13447 transitions. [2024-11-09 19:39:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:20,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 646 [2024-11-09 19:39:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:20,870 INFO L225 Difference]: With dead ends: 7884 [2024-11-09 19:39:20,870 INFO L226 Difference]: Without dead ends: 3764 [2024-11-09 19:39:20,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:20,875 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 235 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:20,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 365 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:39:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2024-11-09 19:39:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3406. [2024-11-09 19:39:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 1.6989720998531572) internal successors, (5785), 3405 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 5785 transitions. [2024-11-09 19:39:20,949 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 5785 transitions. Word has length 646 [2024-11-09 19:39:20,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:20,950 INFO L471 AbstractCegarLoop]: Abstraction has 3406 states and 5785 transitions. [2024-11-09 19:39:20,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 5785 transitions. [2024-11-09 19:39:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2024-11-09 19:39:20,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:20,958 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:20,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:39:21,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:21,159 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:21,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:21,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1047496966, now seen corresponding path program 1 times [2024-11-09 19:39:21,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:21,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023779433] [2024-11-09 19:39:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:21,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-09 19:39:22,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:22,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023779433] [2024-11-09 19:39:22,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023779433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:22,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:39:22,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 19:39:22,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618723982] [2024-11-09 19:39:22,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:22,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 19:39:22,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 19:39:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:39:22,047 INFO L87 Difference]: Start difference. First operand 3406 states and 5785 transitions. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:23,829 INFO L93 Difference]: Finished difference Result 7168 states and 12183 transitions. [2024-11-09 19:39:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 19:39:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 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 676 [2024-11-09 19:39:23,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:23,840 INFO L225 Difference]: With dead ends: 7168 [2024-11-09 19:39:23,840 INFO L226 Difference]: Without dead ends: 3943 [2024-11-09 19:39:23,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:39:23,844 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 623 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:23,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 83 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3035 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:39:23,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2024-11-09 19:39:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3585. [2024-11-09 19:39:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 1.6939174107142858) internal successors, (6071), 3584 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6071 transitions. [2024-11-09 19:39:23,896 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6071 transitions. Word has length 676 [2024-11-09 19:39:23,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:23,897 INFO L471 AbstractCegarLoop]: Abstraction has 3585 states and 6071 transitions. [2024-11-09 19:39:23,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:23,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6071 transitions. [2024-11-09 19:39:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2024-11-09 19:39:23,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:23,905 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:23,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:39:23,905 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:23,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash -66252172, now seen corresponding path program 1 times [2024-11-09 19:39:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772679660] [2024-11-09 19:39:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:23,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 1355 proven. 156 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-09 19:39:24,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:24,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772679660] [2024-11-09 19:39:24,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772679660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:39:24,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049494410] [2024-11-09 19:39:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:24,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:24,520 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) [2024-11-09 19:39:24,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:39:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:24,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:39:24,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:39:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2024-11-09 19:39:24,850 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:39:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049494410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:24,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:39:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 19:39:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197310079] [2024-11-09 19:39:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:24,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:39:24,853 INFO L87 Difference]: Start difference. First operand 3585 states and 6071 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:25,419 INFO L93 Difference]: Finished difference Result 7705 states and 13111 transitions. [2024-11-09 19:39:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 803 [2024-11-09 19:39:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:25,434 INFO L225 Difference]: With dead ends: 7705 [2024-11-09 19:39:25,437 INFO L226 Difference]: Without dead ends: 4301 [2024-11-09 19:39:25,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:39:25,443 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 235 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:25,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 354 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:39:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2024-11-09 19:39:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4122. [2024-11-09 19:39:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4122 states, 4121 states have (on average 1.6942489686969182) internal successors, (6982), 4121 states have internal predecessors, (6982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 6982 transitions. [2024-11-09 19:39:25,530 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 6982 transitions. Word has length 803 [2024-11-09 19:39:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:25,531 INFO L471 AbstractCegarLoop]: Abstraction has 4122 states and 6982 transitions. [2024-11-09 19:39:25,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 6982 transitions. [2024-11-09 19:39:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2024-11-09 19:39:25,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:39:25,542 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:25,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:39:25,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:25,744 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:39:25,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:39:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash 665837017, now seen corresponding path program 1 times [2024-11-09 19:39:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:39:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206416263] [2024-11-09 19:39:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:39:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 2055 proven. 111 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-09 19:39:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:39:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206416263] [2024-11-09 19:39:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206416263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:39:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420872648] [2024-11-09 19:39:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:39:26,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:39:26,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:39:26,382 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) [2024-11-09 19:39:26,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:39:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:39:26,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:39:26,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:39:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2708 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 2303 trivial. 0 not checked. [2024-11-09 19:39:26,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:39:26,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420872648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:39:26,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:39:26,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 19:39:26,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035919467] [2024-11-09 19:39:26,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:39:26,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:39:26,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:39:26,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:39:26,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:39:26,800 INFO L87 Difference]: Start difference. First operand 4122 states and 6982 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:39:27,322 INFO L93 Difference]: Finished difference Result 8955 states and 15180 transitions. [2024-11-09 19:39:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:39:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 905 [2024-11-09 19:39:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:39:27,324 INFO L225 Difference]: With dead ends: 8955 [2024-11-09 19:39:27,324 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 19:39:27,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:39:27,330 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 238 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:39:27,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 337 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:39:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 19:39:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 19:39:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 19:39:27,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 905 [2024-11-09 19:39:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:39:27,333 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 19:39:27,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:39:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 19:39:27,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 19:39:27,336 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 19:39:27,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 19:39:27,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 19:39:27,541 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:39:27,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 19:39:27,971 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 19:39:27,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:39:27 BoogieIcfgContainer [2024-11-09 19:39:27,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 19:39:27,996 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 19:39:27,996 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 19:39:27,996 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 19:39:27,997 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:39:03" (3/4) ... [2024-11-09 19:39:28,001 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 19:39:28,030 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 19:39:28,031 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 19:39:28,035 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 19:39:28,036 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 19:39:28,214 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 19:39:28,215 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 19:39:28,215 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 19:39:28,216 INFO L158 Benchmark]: Toolchain (without parser) took 27247.43ms. Allocated memory was 163.6MB in the beginning and 664.8MB in the end (delta: 501.2MB). Free memory was 129.6MB in the beginning and 563.2MB in the end (delta: -433.6MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2024-11-09 19:39:28,216 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 19:39:28,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.89ms. Allocated memory is still 163.6MB. Free memory was 129.6MB in the beginning and 94.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-09 19:39:28,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.25ms. Allocated memory is still 163.6MB. Free memory was 94.0MB in the beginning and 84.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 19:39:28,217 INFO L158 Benchmark]: Boogie Preprocessor took 127.04ms. Allocated memory is still 163.6MB. Free memory was 84.5MB in the beginning and 72.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 19:39:28,217 INFO L158 Benchmark]: IcfgBuilder took 1609.22ms. Allocated memory is still 163.6MB. Free memory was 72.8MB in the beginning and 66.9MB in the end (delta: 5.9MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2024-11-09 19:39:28,217 INFO L158 Benchmark]: TraceAbstraction took 24534.22ms. Allocated memory was 163.6MB in the beginning and 664.8MB in the end (delta: 501.2MB). Free memory was 65.9MB in the beginning and 581.0MB in the end (delta: -515.2MB). Peak memory consumption was 275.5MB. Max. memory is 16.1GB. [2024-11-09 19:39:28,218 INFO L158 Benchmark]: Witness Printer took 218.96ms. Allocated memory is still 664.8MB. Free memory was 581.0MB in the beginning and 563.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 19:39:28,219 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.89ms. Allocated memory is still 163.6MB. Free memory was 129.6MB in the beginning and 94.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.25ms. Allocated memory is still 163.6MB. Free memory was 94.0MB in the beginning and 84.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.04ms. Allocated memory is still 163.6MB. Free memory was 84.5MB in the beginning and 72.8MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * IcfgBuilder took 1609.22ms. Allocated memory is still 163.6MB. Free memory was 72.8MB in the beginning and 66.9MB in the end (delta: 5.9MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * TraceAbstraction took 24534.22ms. Allocated memory was 163.6MB in the beginning and 664.8MB in the end (delta: 501.2MB). Free memory was 65.9MB in the beginning and 581.0MB in the end (delta: -515.2MB). Peak memory consumption was 275.5MB. Max. memory is 16.1GB. * Witness Printer took 218.96ms. Allocated memory is still 664.8MB. Free memory was 581.0MB in the beginning and 563.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 191]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.0s, OverallIterations: 15, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4299 SdHoareTripleChecker+Valid, 12.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4299 mSDsluCounter, 2847 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 872 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13962 IncrementalHoareTripleChecker+Invalid, 14834 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 872 mSolverCounterUnsat, 2700 mSDtfsCounter, 13962 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2803 GetRequests, 2767 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4122occurred in iteration=14, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 3043 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 9224 NumberOfCodeBlocks, 9224 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9204 ConstructedInterpolants, 0 QuantifiedInterpolants, 27306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3486 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 18690/19144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 19:39:28,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE