./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/init-4-n-u.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/array-multidimensional/init-4-n-u.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 7e1c46a3eec085decec4254bf9381483b25ba7b6541d5728ae52d1793b9b8c91 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:14:38,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:14:38,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:14:38,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:14:38,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:14:38,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:14:38,319 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:14:38,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:14:38,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:14:38,321 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:14:38,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:14:38,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:14:38,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:14:38,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:14:38,325 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:14:38,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:14:38,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:14:38,326 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:14:38,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:14:38,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:14:38,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:14:38,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:14:38,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:14:38,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:14:38,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:14:38,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:14:38,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:14:38,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:14:38,333 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:14:38,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:14:38,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:14:38,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:14:38,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:14:38,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:14:38,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:14:38,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:14:38,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:14:38,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:14:38,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:14:38,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:14:38,336 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:14:38,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:14:38,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1c46a3eec085decec4254bf9381483b25ba7b6541d5728ae52d1793b9b8c91 [2024-11-09 18:14:38,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:14:38,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:14:38,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:14:38,620 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:14:38,621 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:14:38,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/init-4-n-u.c [2024-11-09 18:14:40,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:14:40,264 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:14:40,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/init-4-n-u.c [2024-11-09 18:14:40,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2298e0b4/ce03e38ccddf4a36a37cbda1fe418fe4/FLAG2a3ec6af4 [2024-11-09 18:14:40,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2298e0b4/ce03e38ccddf4a36a37cbda1fe418fe4 [2024-11-09 18:14:40,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:14:40,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:14:40,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:14:40,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:14:40,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:14:40,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c3bf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40, skipping insertion in model container [2024-11-09 18:14:40,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,323 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:14:40,480 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/array-multidimensional/init-4-n-u.c[322,335] [2024-11-09 18:14:40,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:14:40,519 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:14:40,532 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/array-multidimensional/init-4-n-u.c[322,335] [2024-11-09 18:14:40,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:14:40,565 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:14:40,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40 WrapperNode [2024-11-09 18:14:40,566 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:14:40,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:14:40,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:14:40,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:14:40,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,601 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2024-11-09 18:14:40,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:14:40,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:14:40,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:14:40,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:14:40,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,635 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 18:14:40,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,640 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,641 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:14:40,648 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:14:40,648 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:14:40,648 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:14:40,648 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (1/1) ... [2024-11-09 18:14:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:14:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:40,686 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 18:14:40,688 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 18:14:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:14:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:14:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:14:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:14:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:14:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:14:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:14:40,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:14:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:14:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:14:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:14:40,801 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:14:40,804 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:14:40,961 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset; [2024-11-09 18:14:40,974 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-09 18:14:40,975 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:14:40,986 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:14:40,987 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:14:40,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:14:40 BoogieIcfgContainer [2024-11-09 18:14:40,987 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:14:40,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:14:40,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:14:40,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:14:40,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:14:40" (1/3) ... [2024-11-09 18:14:40,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b86436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:14:40, skipping insertion in model container [2024-11-09 18:14:40,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:40" (2/3) ... [2024-11-09 18:14:40,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b86436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:14:40, skipping insertion in model container [2024-11-09 18:14:40,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:14:40" (3/3) ... [2024-11-09 18:14:40,995 INFO L112 eAbstractionObserver]: Analyzing ICFG init-4-n-u.c [2024-11-09 18:14:41,012 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:14:41,013 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:14:41,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:14:41,087 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;@125f02de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:14:41,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:14:41,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 18:14:41,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:41,099 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:41,100 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:41,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash -615488565, now seen corresponding path program 1 times [2024-11-09 18:14:41,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:41,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133399932] [2024-11-09 18:14:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:41,338 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 18:14:41,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:41,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133399932] [2024-11-09 18:14:41,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133399932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:41,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:14:41,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735424220] [2024-11-09 18:14:41,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:41,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:14:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:14:41,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:14:41,374 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:41,394 INFO L93 Difference]: Finished difference Result 67 states and 99 transitions. [2024-11-09 18:14:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:14:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 18:14:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:41,403 INFO L225 Difference]: With dead ends: 67 [2024-11-09 18:14:41,403 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 18:14:41,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:14:41,412 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:41,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 18:14:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-09 18:14:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 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 18:14:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-09 18:14:41,448 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 15 [2024-11-09 18:14:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:41,449 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-09 18:14:41,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-09 18:14:41,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 18:14:41,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:41,452 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:41,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:14:41,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:41,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1568947110, now seen corresponding path program 1 times [2024-11-09 18:14:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259397585] [2024-11-09 18:14:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:41,606 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 18:14:41,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:41,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259397585] [2024-11-09 18:14:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259397585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:41,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:14:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883534153] [2024-11-09 18:14:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:41,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:14:41,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:14:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:14:41,611 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 18:14:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:41,641 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2024-11-09 18:14:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:14:41,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-09 18:14:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:41,642 INFO L225 Difference]: With dead ends: 58 [2024-11-09 18:14:41,642 INFO L226 Difference]: Without dead ends: 41 [2024-11-09 18:14:41,643 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 18:14:41,644 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:41,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-09 18:14:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2024-11-09 18:14:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 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 18:14:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-09 18:14:41,651 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16 [2024-11-09 18:14:41,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:41,651 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-09 18:14:41,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 18:14:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-09 18:14:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 18:14:41,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:41,652 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:41,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:14:41,653 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:41,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1917014546, now seen corresponding path program 1 times [2024-11-09 18:14:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744813337] [2024-11-09 18:14:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:41,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:41,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744813337] [2024-11-09 18:14:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744813337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:41,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:41,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848552991] [2024-11-09 18:14:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:41,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:41,808 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 18:14:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:41,882 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2024-11-09 18:14:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:41,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-09 18:14:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:41,884 INFO L225 Difference]: With dead ends: 81 [2024-11-09 18:14:41,885 INFO L226 Difference]: Without dead ends: 53 [2024-11-09 18:14:41,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:41,887 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 79 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:41,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 55 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:14:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-09 18:14:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2024-11-09 18:14:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 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 18:14:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-09 18:14:41,899 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 21 [2024-11-09 18:14:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:41,900 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-09 18:14:41,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 18:14:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-09 18:14:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 18:14:41,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:41,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:41,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:14:41,902 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:41,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash -434101789, now seen corresponding path program 1 times [2024-11-09 18:14:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:41,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777382120] [2024-11-09 18:14:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:41,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:42,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:42,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777382120] [2024-11-09 18:14:42,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777382120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:42,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:42,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:42,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531179420] [2024-11-09 18:14:42,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:42,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:42,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:42,024 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 18:14:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:42,069 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2024-11-09 18:14:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:42,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-11-09 18:14:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:42,073 INFO L225 Difference]: With dead ends: 83 [2024-11-09 18:14:42,074 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 18:14:42,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:42,075 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 61 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:42,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 55 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 18:14:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2024-11-09 18:14:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 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 18:14:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-09 18:14:42,091 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 26 [2024-11-09 18:14:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:42,091 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-09 18:14:42,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 18:14:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-09 18:14:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 18:14:42,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:42,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:42,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:14:42,095 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:42,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:42,095 INFO L85 PathProgramCache]: Analyzing trace with hash 626588309, now seen corresponding path program 1 times [2024-11-09 18:14:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:42,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852409512] [2024-11-09 18:14:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:42,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:42,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852409512] [2024-11-09 18:14:42,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852409512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:42,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:42,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653376533] [2024-11-09 18:14:42,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:42,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:42,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:42,191 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:14:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:42,225 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-09 18:14:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-11-09 18:14:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:42,230 INFO L225 Difference]: With dead ends: 85 [2024-11-09 18:14:42,230 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 18:14:42,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:42,231 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:42,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 61 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:42,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 18:14:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2024-11-09 18:14:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-09 18:14:42,248 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2024-11-09 18:14:42,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:42,249 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-09 18:14:42,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 18:14:42,249 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-09 18:14:42,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 18:14:42,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:42,250 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:42,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:14:42,251 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:42,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:42,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1433942762, now seen corresponding path program 1 times [2024-11-09 18:14:42,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:42,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414590160] [2024-11-09 18:14:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:42,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:42,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414590160] [2024-11-09 18:14:42,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414590160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:42,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844084830] [2024-11-09 18:14:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:42,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:42,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:42,401 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 18:14:42,402 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 18:14:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:42,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:14:42,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:42,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:42,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844084830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:42,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:42,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 18:14:42,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678106945] [2024-11-09 18:14:42,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:42,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:14:42,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:14:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:14:42,677 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 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 18:14:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:42,767 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2024-11-09 18:14:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:14:42,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-09 18:14:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:42,768 INFO L225 Difference]: With dead ends: 111 [2024-11-09 18:14:42,769 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 18:14:42,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:14:42,770 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 123 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:42,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 18:14:42,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2024-11-09 18:14:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.180327868852459) internal successors, (72), 61 states have internal predecessors, (72), 0 states have call successors, (0), 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 18:14:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2024-11-09 18:14:42,784 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 33 [2024-11-09 18:14:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:42,785 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2024-11-09 18:14:42,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 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 18:14:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2024-11-09 18:14:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 18:14:42,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:42,788 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 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 18:14:42,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:14:42,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 18:14:42,991 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:42,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1066091751, now seen corresponding path program 2 times [2024-11-09 18:14:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:42,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070796167] [2024-11-09 18:14:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:42,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:43,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070796167] [2024-11-09 18:14:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070796167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:43,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577382437] [2024-11-09 18:14:43,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:14:43,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:43,153 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 18:14:43,155 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 18:14:43,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:14:43,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:14:43,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 18:14:43,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:43,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:43,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577382437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:43,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:43,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 18:14:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727278203] [2024-11-09 18:14:43,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:43,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:14:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:14:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:14:43,481 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:14:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:43,675 INFO L93 Difference]: Finished difference Result 183 states and 212 transitions. [2024-11-09 18:14:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:14:43,675 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 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 39 [2024-11-09 18:14:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:43,676 INFO L225 Difference]: With dead ends: 183 [2024-11-09 18:14:43,677 INFO L226 Difference]: Without dead ends: 125 [2024-11-09 18:14:43,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:14:43,678 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 190 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:43,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 200 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:14:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-09 18:14:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 98. [2024-11-09 18:14:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 0 states have call successors, (0), 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 18:14:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2024-11-09 18:14:43,698 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 39 [2024-11-09 18:14:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:43,699 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2024-11-09 18:14:43,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:14:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2024-11-09 18:14:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:14:43,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:43,701 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 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 18:14:43,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:14:43,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 18:14:43,902 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:43,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -658969505, now seen corresponding path program 3 times [2024-11-09 18:14:43,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:43,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163314885] [2024-11-09 18:14:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:43,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:44,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:44,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163314885] [2024-11-09 18:14:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163314885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:44,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884304598] [2024-11-09 18:14:44,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:14:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:44,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:44,236 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 18:14:44,238 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 18:14:44,314 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:14:44,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:14:44,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:14:44,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-09 18:14:44,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-09 18:14:44,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884304598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:44,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:44,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 4] total 18 [2024-11-09 18:14:44,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974910646] [2024-11-09 18:14:44,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:44,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 18:14:44,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:44,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 18:14:44,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2024-11-09 18:14:44,574 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:14:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:45,636 INFO L93 Difference]: Finished difference Result 344 states and 384 transitions. [2024-11-09 18:14:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 18:14:45,637 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 18:14:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:45,639 INFO L225 Difference]: With dead ends: 344 [2024-11-09 18:14:45,639 INFO L226 Difference]: Without dead ends: 250 [2024-11-09 18:14:45,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1355, Invalid=2935, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 18:14:45,641 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 566 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:45,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 188 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:14:45,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-09 18:14:45,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 215. [2024-11-09 18:14:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.1261682242990654) internal successors, (241), 214 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 18:14:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 241 transitions. [2024-11-09 18:14:45,667 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 241 transitions. Word has length 51 [2024-11-09 18:14:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:45,667 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 241 transitions. [2024-11-09 18:14:45,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:14:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 241 transitions. [2024-11-09 18:14:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-09 18:14:45,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:45,669 INFO L215 NwaCegarLoop]: trace histogram [48, 44, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:45,688 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 18:14:45,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:45,871 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:45,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:45,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1683520474, now seen corresponding path program 4 times [2024-11-09 18:14:45,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:45,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876560898] [2024-11-09 18:14:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2406 backedges. 900 proven. 132 refuted. 0 times theorem prover too weak. 1374 trivial. 0 not checked. [2024-11-09 18:14:46,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876560898] [2024-11-09 18:14:46,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876560898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288467624] [2024-11-09 18:14:46,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:14:46,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:46,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:46,403 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 18:14:46,405 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 18:14:53,336 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:14:53,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:14:53,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:14:53,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2406 backedges. 926 proven. 2 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2024-11-09 18:14:53,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2406 backedges. 926 proven. 2 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2024-11-09 18:14:53,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288467624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:53,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:53,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2024-11-09 18:14:53,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606633684] [2024-11-09 18:14:53,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:53,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 18:14:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 18:14:53,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:14:53,613 INFO L87 Difference]: Start difference. First operand 215 states and 241 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:54,871 INFO L93 Difference]: Finished difference Result 1179 states and 1286 transitions. [2024-11-09 18:14:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-09 18:14:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-09 18:14:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:54,875 INFO L225 Difference]: With dead ends: 1179 [2024-11-09 18:14:54,875 INFO L226 Difference]: Without dead ends: 970 [2024-11-09 18:14:54,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1734, Invalid=3668, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 18:14:54,880 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 2231 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:54,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 233 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:14:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2024-11-09 18:14:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 809. [2024-11-09 18:14:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 1.1163366336633664) internal successors, (902), 808 states have internal predecessors, (902), 0 states have call successors, (0), 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 18:14:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 902 transitions. [2024-11-09 18:14:54,962 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 902 transitions. Word has length 164 [2024-11-09 18:14:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:54,963 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 902 transitions. [2024-11-09 18:14:54,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 21 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 902 transitions. [2024-11-09 18:14:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2024-11-09 18:14:54,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:54,971 INFO L215 NwaCegarLoop]: trace histogram [208, 192, 32, 20, 16, 16, 16, 16, 16, 16, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:55,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:14:55,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:55,172 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:55,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 927923622, now seen corresponding path program 5 times [2024-11-09 18:14:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:55,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575967759] [2024-11-09 18:14:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:55,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 44694 backedges. 5178 proven. 156 refuted. 0 times theorem prover too weak. 39360 trivial. 0 not checked. [2024-11-09 18:14:56,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:56,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575967759] [2024-11-09 18:14:56,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575967759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:56,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468765610] [2024-11-09 18:14:56,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:14:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:56,781 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 18:14:56,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process