./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s32if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s32if.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 371b46898ac196d32c6a3ef4c51b315e7fba4a376d0f69ff343a10a3b7c63d98 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 17:09:46,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 17:09:47,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 17:09:47,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 17:09:47,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 17:09:47,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 17:09:47,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 17:09:47,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 17:09:47,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 17:09:47,067 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 17:09:47,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 17:09:47,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 17:09:47,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 17:09:47,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 17:09:47,070 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 17:09:47,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 17:09:47,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 17:09:47,071 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 17:09:47,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 17:09:47,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 17:09:47,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 17:09:47,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 17:09:47,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 17:09:47,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 17:09:47,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 17:09:47,077 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 17:09:47,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 17:09:47,078 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 17:09:47,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 17:09:47,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 17:09:47,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 17:09:47,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 17:09:47,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:09:47,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 17:09:47,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 17:09:47,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 17:09:47,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 17:09:47,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 17:09:47,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 17:09:47,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 17:09:47,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 17:09:47,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 17:09:47,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 371b46898ac196d32c6a3ef4c51b315e7fba4a376d0f69ff343a10a3b7c63d98 [2024-11-19 17:09:47,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 17:09:47,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 17:09:47,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 17:09:47,357 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 17:09:47,357 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 17:09:47,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s32if.c [2024-11-19 17:09:48,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 17:09:48,964 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 17:09:48,965 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s32if.c [2024-11-19 17:09:48,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294caff38/b5f34b7e0efd4238bd121cc781e200e0/FLAGbe9a90008 [2024-11-19 17:09:48,984 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294caff38/b5f34b7e0efd4238bd121cc781e200e0 [2024-11-19 17:09:48,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 17:09:48,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 17:09:48,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 17:09:48,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 17:09:48,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 17:09:48,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:48" (1/1) ... [2024-11-19 17:09:48,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18706264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:48, skipping insertion in model container [2024-11-19 17:09:48,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:48" (1/1) ... [2024-11-19 17:09:49,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 17:09:49,186 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-fpi/s32if.c[588,601] [2024-11-19 17:09:49,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:09:49,211 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 17:09:49,223 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-fpi/s32if.c[588,601] [2024-11-19 17:09:49,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:09:49,247 INFO L204 MainTranslator]: Completed translation [2024-11-19 17:09:49,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49 WrapperNode [2024-11-19 17:09:49,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 17:09:49,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 17:09:49,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 17:09:49,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 17:09:49,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,287 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2024-11-19 17:09:49,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 17:09:49,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 17:09:49,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 17:09:49,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 17:09:49,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,299 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,313 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 8, 6, 9]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 3, 3]. [2024-11-19 17:09:49,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 17:09:49,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 17:09:49,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 17:09:49,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 17:09:49,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (1/1) ... [2024-11-19 17:09:49,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:09:49,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:49,369 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) [2024-11-19 17:09:49,373 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 [2024-11-19 17:09:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 17:09:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 17:09:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 17:09:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 17:09:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 17:09:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 17:09:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 17:09:49,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 17:09:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 17:09:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 17:09:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 17:09:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 17:09:49,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 17:09:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 17:09:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 17:09:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 17:09:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 17:09:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 17:09:49,525 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 17:09:49,528 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 17:09:49,726 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-19 17:09:49,726 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 17:09:49,738 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 17:09:49,738 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 17:09:49,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:49 BoogieIcfgContainer [2024-11-19 17:09:49,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 17:09:49,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 17:09:49,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 17:09:49,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 17:09:49,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:09:48" (1/3) ... [2024-11-19 17:09:49,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19be7d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:49, skipping insertion in model container [2024-11-19 17:09:49,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:49" (2/3) ... [2024-11-19 17:09:49,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19be7d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:49, skipping insertion in model container [2024-11-19 17:09:49,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:49" (3/3) ... [2024-11-19 17:09:49,751 INFO L112 eAbstractionObserver]: Analyzing ICFG s32if.c [2024-11-19 17:09:49,768 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 17:09:49,768 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 17:09:49,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 17:09:49,827 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;@323b58a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 17:09:49,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 17:09:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 17:09:49,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:49,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:49,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:49,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:49,840 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2024-11-19 17:09:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:49,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025550065] [2024-11-19 17:09:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:09:50,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:50,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025550065] [2024-11-19 17:09:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025550065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:09:50,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:09:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:09:50,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426672634] [2024-11-19 17:09:50,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:09:50,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 17:09:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 17:09:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 17:09:50,042 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:50,058 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2024-11-19 17:09:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 17:09:50,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 17:09:50,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:50,069 INFO L225 Difference]: With dead ends: 42 [2024-11-19 17:09:50,070 INFO L226 Difference]: Without dead ends: 19 [2024-11-19 17:09:50,072 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 [2024-11-19 17:09:50,077 INFO L432 NwaCegarLoop]: 28 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, 28 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 [2024-11-19 17:09:50,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 17:09:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-19 17:09:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-19 17:09:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-19 17:09:50,108 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2024-11-19 17:09:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:50,109 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-19 17:09:50,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-19 17:09:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 17:09:50,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:50,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:50,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 17:09:50,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:50,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2024-11-19 17:09:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187720227] [2024-11-19 17:09:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:50,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:09:50,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187720227] [2024-11-19 17:09:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187720227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:09:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:09:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 17:09:50,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089660830] [2024-11-19 17:09:50,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:09:50,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 17:09:50,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 17:09:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 17:09:50,319 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:50,411 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-11-19 17:09:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 17:09:50,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 17:09:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:50,415 INFO L225 Difference]: With dead ends: 39 [2024-11-19 17:09:50,415 INFO L226 Difference]: Without dead ends: 27 [2024-11-19 17:09:50,415 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 [2024-11-19 17:09:50,417 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:50,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 11 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:09:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-19 17:09:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-19 17:09:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2024-11-19 17:09:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-19 17:09:50,447 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2024-11-19 17:09:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:50,447 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-19 17:09:50,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-19 17:09:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 17:09:50,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:50,455 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:50,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 17:09:50,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:50,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2024-11-19 17:09:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:50,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341539742] [2024-11-19 17:09:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:51,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:51,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341539742] [2024-11-19 17:09:51,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341539742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:51,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491581178] [2024-11-19 17:09:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:51,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:51,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:51,094 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) [2024-11-19 17:09:51,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 17:09:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:51,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 17:09:51,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:51,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:09:51,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:09:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:51,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491581178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:51,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2024-11-19 17:09:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426003527] [2024-11-19 17:09:51,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:51,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 17:09:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 17:09:51,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-19 17:09:51,672 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:52,149 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-19 17:09:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 17:09:52,150 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-19 17:09:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:52,151 INFO L225 Difference]: With dead ends: 48 [2024-11-19 17:09:52,151 INFO L226 Difference]: Without dead ends: 44 [2024-11-19 17:09:52,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2024-11-19 17:09:52,153 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:52,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 53 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 17:09:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-19 17:09:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-11-19 17:09:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-19 17:09:52,165 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 21 [2024-11-19 17:09:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:52,166 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-19 17:09:52,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-19 17:09:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 17:09:52,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:52,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:52,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 17:09:52,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:52,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:52,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:52,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2024-11-19 17:09:52,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273891328] [2024-11-19 17:09:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:52,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:52,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273891328] [2024-11-19 17:09:52,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273891328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:52,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660698493] [2024-11-19 17:09:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:52,658 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) [2024-11-19 17:09:52,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 17:09:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:52,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 17:09:52,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:52,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:09:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:52,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:52,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-19 17:09:52,929 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 17:09:52,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-19 17:09:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:52,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660698493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:52,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:52,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2024-11-19 17:09:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129769045] [2024-11-19 17:09:52,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:52,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 17:09:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:52,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 17:09:52,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-19 17:09:52,946 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) [2024-11-19 17:09:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:53,138 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-11-19 17:09:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 17:09:53,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) Word has length 21 [2024-11-19 17:09:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:53,140 INFO L225 Difference]: With dead ends: 86 [2024-11-19 17:09:53,140 INFO L226 Difference]: Without dead ends: 74 [2024-11-19 17:09:53,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-19 17:09:53,142 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:53,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 105 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:09:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-19 17:09:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2024-11-19 17:09:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2024-11-19 17:09:53,160 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 21 [2024-11-19 17:09:53,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:53,160 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2024-11-19 17:09:53,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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) [2024-11-19 17:09:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2024-11-19 17:09:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 17:09:53,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:53,162 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:53,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 17:09:53,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 17:09:53,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:53,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1592625659, now seen corresponding path program 1 times [2024-11-19 17:09:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:53,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987159091] [2024-11-19 17:09:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987159091] [2024-11-19 17:09:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987159091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531013905] [2024-11-19 17:09:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:53,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:53,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:53,562 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) [2024-11-19 17:09:53,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 17:09:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:53,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 17:09:53,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:53,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:09:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:53,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:53,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 17:09:53,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-19 17:09:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:53,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531013905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:53,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:53,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-19 17:09:53,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550074087] [2024-11-19 17:09:53,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:53,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 17:09:53,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:53,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 17:09:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 17:09:53,711 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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) [2024-11-19 17:09:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:53,803 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2024-11-19 17:09:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 17:09:53,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 21 [2024-11-19 17:09:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:53,804 INFO L225 Difference]: With dead ends: 78 [2024-11-19 17:09:53,804 INFO L226 Difference]: Without dead ends: 57 [2024-11-19 17:09:53,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-19 17:09:53,805 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:53,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 64 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:09:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-19 17:09:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-11-19 17:09:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-11-19 17:09:53,817 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2024-11-19 17:09:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:53,817 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-11-19 17:09:53,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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) [2024-11-19 17:09:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-11-19 17:09:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 17:09:53,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:53,819 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] [2024-11-19 17:09:53,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 17:09:54,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:54,020 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:54,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2024-11-19 17:09:54,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:54,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215367012] [2024-11-19 17:09:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:54,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215367012] [2024-11-19 17:09:54,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215367012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532431278] [2024-11-19 17:09:54,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:09:54,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:54,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:54,105 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) [2024-11-19 17:09:54,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 17:09:54,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:09:54,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:09:54,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 17:09:54,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:54,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:54,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532431278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:54,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:54,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 17:09:54,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364822109] [2024-11-19 17:09:54,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:54,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 17:09:54,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:54,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 17:09:54,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:09:54,286 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:54,469 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2024-11-19 17:09:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 17:09:54,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-19 17:09:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:54,470 INFO L225 Difference]: With dead ends: 85 [2024-11-19 17:09:54,470 INFO L226 Difference]: Without dead ends: 75 [2024-11-19 17:09:54,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-19 17:09:54,471 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:54,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 28 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:09:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-19 17:09:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2024-11-19 17:09:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-19 17:09:54,480 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2024-11-19 17:09:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:54,480 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-19 17:09:54,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-19 17:09:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 17:09:54,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:54,481 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] [2024-11-19 17:09:54,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 17:09:54,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:54,682 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:54,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:54,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2024-11-19 17:09:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159810729] [2024-11-19 17:09:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:54,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:54,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159810729] [2024-11-19 17:09:54,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159810729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:54,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590881983] [2024-11-19 17:09:54,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:09:54,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:54,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:54,798 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) [2024-11-19 17:09:54,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 17:09:54,866 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 17:09:54,866 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:09:54,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 17:09:54,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:54,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 17:09:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590881983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:54,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 17:09:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849082389] [2024-11-19 17:09:54,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:54,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 17:09:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 17:09:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-19 17:09:54,976 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:55,101 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2024-11-19 17:09:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 17:09:55,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-19 17:09:55,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:55,103 INFO L225 Difference]: With dead ends: 78 [2024-11-19 17:09:55,103 INFO L226 Difference]: Without dead ends: 42 [2024-11-19 17:09:55,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-19 17:09:55,104 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:55,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 37 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:09:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-19 17:09:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-11-19 17:09:55,109 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) [2024-11-19 17:09:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-19 17:09:55,110 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2024-11-19 17:09:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:55,110 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-19 17:09:55,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:55,111 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-19 17:09:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 17:09:55,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:55,111 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:55,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 17:09:55,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:55,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:55,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2024-11-19 17:09:55,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:55,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472252616] [2024-11-19 17:09:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:09:55,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:55,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472252616] [2024-11-19 17:09:55,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472252616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:55,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989158389] [2024-11-19 17:09:55,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 17:09:55,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:55,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:55,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:09:55,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 17:09:55,950 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 17:09:55,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:09:55,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 17:09:55,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:55,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:09:56,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:09:56,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:09:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:09:56,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:09:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989158389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:56,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:56,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-11-19 17:09:56,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923469181] [2024-11-19 17:09:56,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:56,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 17:09:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 17:09:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 17:09:56,889 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:57,716 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2024-11-19 17:09:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 17:09:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 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 29 [2024-11-19 17:09:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:57,718 INFO L225 Difference]: With dead ends: 88 [2024-11-19 17:09:57,718 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 17:09:57,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=391, Invalid=2365, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 17:09:57,720 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 61 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:57,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 79 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 17:09:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 17:09:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2024-11-19 17:09:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2024-11-19 17:09:57,736 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 29 [2024-11-19 17:09:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:57,737 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2024-11-19 17:09:57,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2024-11-19 17:09:57,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 17:09:57,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:57,738 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:57,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 17:09:57,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:57,939 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:57,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2024-11-19 17:09:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798412224] [2024-11-19 17:09:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 17:09:58,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798412224] [2024-11-19 17:09:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798412224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816354420] [2024-11-19 17:09:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:58,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:58,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:09:58,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 17:09:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:58,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 17:09:58,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:58,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:09:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 17:09:58,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:58,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 17:09:58,501 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 17:09:58,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-19 17:09:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 17:09:58,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816354420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:58,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:58,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2024-11-19 17:09:58,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651908646] [2024-11-19 17:09:58,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:58,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 17:09:58,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:58,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 17:09:58,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-19 17:09:58,522 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2024-11-19 17:09:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:58,726 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2024-11-19 17:09:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 17:09:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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 29 [2024-11-19 17:09:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:58,727 INFO L225 Difference]: With dead ends: 106 [2024-11-19 17:09:58,727 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 17:09:58,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-19 17:09:58,728 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 63 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:58,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 123 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:09:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 17:09:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 71. [2024-11-19 17:09:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 70 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2024-11-19 17:09:58,741 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 29 [2024-11-19 17:09:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:58,742 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2024-11-19 17:09:58,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2024-11-19 17:09:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2024-11-19 17:09:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 17:09:58,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:58,743 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:58,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 17:09:58,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:58,943 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:58,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:58,944 INFO L85 PathProgramCache]: Analyzing trace with hash -968292246, now seen corresponding path program 1 times [2024-11-19 17:09:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:58,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708399798] [2024-11-19 17:09:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:09:59,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:59,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708399798] [2024-11-19 17:09:59,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708399798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:59,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805466636] [2024-11-19 17:09:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:59,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:59,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:59,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:09:59,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 17:09:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:59,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 17:09:59,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:09:59,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:09:59,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:09:59,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-19 17:09:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:09:59,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:09:59,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 17:09:59,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 17:09:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:09:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805466636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:09:59,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:09:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-19 17:09:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357162748] [2024-11-19 17:09:59,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:09:59,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 17:09:59,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:09:59,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 17:09:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-19 17:09:59,425 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:09:59,597 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2024-11-19 17:09:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 17:09:59,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 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 29 [2024-11-19 17:09:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:09:59,599 INFO L225 Difference]: With dead ends: 113 [2024-11-19 17:09:59,599 INFO L226 Difference]: Without dead ends: 82 [2024-11-19 17:09:59,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-19 17:09:59,600 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:09:59,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 86 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:09:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-19 17:09:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2024-11-19 17:09:59,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 72 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) [2024-11-19 17:09:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2024-11-19 17:09:59,618 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 29 [2024-11-19 17:09:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:09:59,618 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2024-11-19 17:09:59,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:09:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2024-11-19 17:09:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 17:09:59,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:09:59,619 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:09:59,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 17:09:59,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 17:09:59,820 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:09:59,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:09:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times [2024-11-19 17:09:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:09:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391598430] [2024-11-19 17:09:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:09:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:09:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:09:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:09:59,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:09:59,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391598430] [2024-11-19 17:09:59,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391598430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:09:59,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637886261] [2024-11-19 17:09:59,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 17:09:59,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:09:59,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:09:59,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:09:59,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 17:10:00,065 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 17:10:00,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:00,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 17:10:00,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:10:00,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:10:00,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637886261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:00,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:00,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-19 17:10:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002413747] [2024-11-19 17:10:00,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:00,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 17:10:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 17:10:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 17:10:00,201 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2024-11-19 17:10:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:00,415 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2024-11-19 17:10:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 17:10:00,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) Word has length 31 [2024-11-19 17:10:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:00,418 INFO L225 Difference]: With dead ends: 116 [2024-11-19 17:10:00,418 INFO L226 Difference]: Without dead ends: 101 [2024-11-19 17:10:00,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-19 17:10:00,419 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 74 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:00,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 22 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:10:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-19 17:10:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2024-11-19 17:10:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2024-11-19 17:10:00,439 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 31 [2024-11-19 17:10:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:00,439 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2024-11-19 17:10:00,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 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) [2024-11-19 17:10:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2024-11-19 17:10:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 17:10:00,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:00,440 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:00,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:00,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:00,641 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:00,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times [2024-11-19 17:10:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:00,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742664674] [2024-11-19 17:10:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:10:00,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:00,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742664674] [2024-11-19 17:10:00,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742664674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:00,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676266996] [2024-11-19 17:10:00,751 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 17:10:00,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:00,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:00,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:00,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 17:10:00,836 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 17:10:00,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:00,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 17:10:00,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:10:00,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 17:10:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676266996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:00,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:00,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-19 17:10:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760067565] [2024-11-19 17:10:00,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:00,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 17:10:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 17:10:00,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 17:10:00,993 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:01,133 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2024-11-19 17:10:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 17:10:01,134 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-19 17:10:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:01,135 INFO L225 Difference]: With dead ends: 106 [2024-11-19 17:10:01,135 INFO L226 Difference]: Without dead ends: 53 [2024-11-19 17:10:01,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-19 17:10:01,136 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:01,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:10:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-19 17:10:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2024-11-19 17:10:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-19 17:10:01,147 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 32 [2024-11-19 17:10:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:01,148 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-19 17:10:01,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-19 17:10:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 17:10:01,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:01,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:01,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:01,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 17:10:01,350 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:01,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:01,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times [2024-11-19 17:10:01,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:01,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478499090] [2024-11-19 17:10:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:02,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478499090] [2024-11-19 17:10:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478499090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:02,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151131786] [2024-11-19 17:10:02,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 17:10:02,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:02,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:02,046 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:02,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 17:10:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:02,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-19 17:10:02,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:02,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:10:02,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:02,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:02,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:02,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151131786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:02,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:02,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 40 [2024-11-19 17:10:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448223674] [2024-11-19 17:10:02,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:03,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-19 17:10:03,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:03,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-19 17:10:03,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1412, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 17:10:03,002 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:04,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:04,431 INFO L93 Difference]: Finished difference Result 125 states and 158 transitions. [2024-11-19 17:10:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-19 17:10:04,432 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 0 states have call successors, (0), 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 37 [2024-11-19 17:10:04,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:04,432 INFO L225 Difference]: With dead ends: 125 [2024-11-19 17:10:04,432 INFO L226 Difference]: Without dead ends: 116 [2024-11-19 17:10:04,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=538, Invalid=4292, Unknown=0, NotChecked=0, Total=4830 [2024-11-19 17:10:04,435 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 80 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:04,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 96 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 17:10:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-19 17:10:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2024-11-19 17:10:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 96 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-11-19 17:10:04,450 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 37 [2024-11-19 17:10:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:04,451 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-11-19 17:10:04,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.825) internal successors, (73), 40 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-11-19 17:10:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 17:10:04,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:04,452 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:04,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 17:10:04,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 17:10:04,656 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:04,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times [2024-11-19 17:10:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:04,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931422119] [2024-11-19 17:10:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:04,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 17:10:04,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:04,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931422119] [2024-11-19 17:10:04,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931422119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:04,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080286941] [2024-11-19 17:10:04,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:10:04,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:04,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:04,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:04,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 17:10:05,080 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:10:05,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:05,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 17:10:05,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:05,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2024-11-19 17:10:05,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:10:05,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2024-11-19 17:10:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:10:05,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:05,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2024-11-19 17:10:05,581 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 17:10:05,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2024-11-19 17:10:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:10:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080286941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:05,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:05,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 38 [2024-11-19 17:10:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970234686] [2024-11-19 17:10:05,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:05,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-19 17:10:05,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-19 17:10:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 17:10:05,724 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 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) [2024-11-19 17:10:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:07,211 INFO L93 Difference]: Finished difference Result 253 states and 325 transitions. [2024-11-19 17:10:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 17:10:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 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 37 [2024-11-19 17:10:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:07,214 INFO L225 Difference]: With dead ends: 253 [2024-11-19 17:10:07,214 INFO L226 Difference]: Without dead ends: 244 [2024-11-19 17:10:07,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=791, Invalid=4039, Unknown=0, NotChecked=0, Total=4830 [2024-11-19 17:10:07,217 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 285 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:07,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 148 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:10:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-19 17:10:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 171. [2024-11-19 17:10:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2941176470588236) internal successors, (220), 170 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2024-11-19 17:10:07,251 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 37 [2024-11-19 17:10:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:07,252 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2024-11-19 17:10:07,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 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) [2024-11-19 17:10:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2024-11-19 17:10:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 17:10:07,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:07,253 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:07,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:07,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 17:10:07,454 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:07,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:07,454 INFO L85 PathProgramCache]: Analyzing trace with hash -147310295, now seen corresponding path program 2 times [2024-11-19 17:10:07,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:07,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512685696] [2024-11-19 17:10:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:07,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:07,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512685696] [2024-11-19 17:10:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512685696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884334827] [2024-11-19 17:10:07,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:10:07,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:07,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:07,753 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:07,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 17:10:07,841 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:10:07,841 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:07,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 17:10:07,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:07,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:10:07,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:10:07,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-19 17:10:07,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:10:07,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-19 17:10:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:08,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:08,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-19 17:10:08,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 17:10:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:08,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884334827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:08,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:08,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 19 [2024-11-19 17:10:08,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123267675] [2024-11-19 17:10:08,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:08,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 17:10:08,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 17:10:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-19 17:10:08,077 INFO L87 Difference]: Start difference. First operand 171 states and 220 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:08,265 INFO L93 Difference]: Finished difference Result 286 states and 376 transitions. [2024-11-19 17:10:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 17:10:08,266 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 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 37 [2024-11-19 17:10:08,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:08,267 INFO L225 Difference]: With dead ends: 286 [2024-11-19 17:10:08,267 INFO L226 Difference]: Without dead ends: 183 [2024-11-19 17:10:08,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-11-19 17:10:08,268 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:08,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:10:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-19 17:10:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2024-11-19 17:10:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2823529411764707) internal successors, (218), 170 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 218 transitions. [2024-11-19 17:10:08,294 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 218 transitions. Word has length 37 [2024-11-19 17:10:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:08,294 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 218 transitions. [2024-11-19 17:10:08,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:08,295 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 218 transitions. [2024-11-19 17:10:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 17:10:08,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:08,295 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:08,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 17:10:08,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 17:10:08,496 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:08,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1016239403, now seen corresponding path program 8 times [2024-11-19 17:10:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780149701] [2024-11-19 17:10:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:08,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:08,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:08,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780149701] [2024-11-19 17:10:08,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780149701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:08,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523140615] [2024-11-19 17:10:08,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 17:10:08,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:08,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:08,648 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:08,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 17:10:08,739 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 17:10:08,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:08,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 17:10:08,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:08,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:08,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523140615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:08,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:08,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-19 17:10:08,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316938688] [2024-11-19 17:10:08,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:08,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 17:10:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 17:10:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-19 17:10:08,884 INFO L87 Difference]: Start difference. First operand 171 states and 218 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2024-11-19 17:10:09,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:09,141 INFO L93 Difference]: Finished difference Result 202 states and 258 transitions. [2024-11-19 17:10:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 17:10:09,142 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-19 17:10:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:09,143 INFO L225 Difference]: With dead ends: 202 [2024-11-19 17:10:09,143 INFO L226 Difference]: Without dead ends: 184 [2024-11-19 17:10:09,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-19 17:10:09,144 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 82 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:09,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 33 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:10:09,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-19 17:10:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 104. [2024-11-19 17:10:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.233009708737864) internal successors, (127), 103 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2024-11-19 17:10:09,162 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 39 [2024-11-19 17:10:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:09,162 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2024-11-19 17:10:09,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2024-11-19 17:10:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2024-11-19 17:10:09,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-19 17:10:09,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:09,163 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:09,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:09,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:09,364 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:09,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1682760144, now seen corresponding path program 9 times [2024-11-19 17:10:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361721606] [2024-11-19 17:10:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:09,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361721606] [2024-11-19 17:10:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361721606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:09,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409388701] [2024-11-19 17:10:09,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:10:09,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:09,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:09,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:09,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 17:10:09,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 17:10:09,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:09,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 17:10:09,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:09,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 17:10:09,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409388701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:09,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-19 17:10:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649143745] [2024-11-19 17:10:09,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:09,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 17:10:09,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 17:10:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-19 17:10:09,786 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:09,905 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2024-11-19 17:10:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 17:10:09,906 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-19 17:10:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:09,906 INFO L225 Difference]: With dead ends: 133 [2024-11-19 17:10:09,906 INFO L226 Difference]: Without dead ends: 61 [2024-11-19 17:10:09,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-19 17:10:09,907 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 64 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:09,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 34 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:10:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-19 17:10:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2024-11-19 17:10:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-19 17:10:09,915 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 40 [2024-11-19 17:10:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:09,916 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-19 17:10:09,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-19 17:10:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 17:10:09,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:09,916 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:09,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:10,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 17:10:10,121 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:10,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2111860654, now seen corresponding path program 10 times [2024-11-19 17:10:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210408109] [2024-11-19 17:10:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 17:10:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210408109] [2024-11-19 17:10:11,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210408109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328161371] [2024-11-19 17:10:11,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 17:10:11,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:11,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:11,373 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:11,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 17:10:11,488 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 17:10:11,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:11,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-19 17:10:11,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:11,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:10:11,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:12,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:12,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:12,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:10:12,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:10:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328161371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:13,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 60 [2024-11-19 17:10:13,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169528763] [2024-11-19 17:10:13,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:13,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-19 17:10:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:13,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-19 17:10:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3286, Unknown=0, NotChecked=0, Total=3540 [2024-11-19 17:10:13,576 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 60 states, 60 states have (on average 1.8666666666666667) internal successors, (112), 60 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:17,857 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2024-11-19 17:10:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-19 17:10:17,858 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.8666666666666667) internal successors, (112), 60 states have internal predecessors, (112), 0 states have call successors, (0), 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 45 [2024-11-19 17:10:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:17,859 INFO L225 Difference]: With dead ends: 177 [2024-11-19 17:10:17,859 INFO L226 Difference]: Without dead ends: 167 [2024-11-19 17:10:17,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1136, Invalid=12436, Unknown=0, NotChecked=0, Total=13572 [2024-11-19 17:10:17,862 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 145 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:17,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 130 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 17:10:17,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-19 17:10:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 122. [2024-11-19 17:10:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 121 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2024-11-19 17:10:17,892 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 45 [2024-11-19 17:10:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:17,892 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2024-11-19 17:10:17,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.8666666666666667) internal successors, (112), 60 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2024-11-19 17:10:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 17:10:17,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:17,893 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:17,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:18,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 17:10:18,093 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:18,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2054602352, now seen corresponding path program 3 times [2024-11-19 17:10:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:18,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943660777] [2024-11-19 17:10:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:18,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:10:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943660777] [2024-11-19 17:10:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943660777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873990881] [2024-11-19 17:10:18,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:10:18,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:18,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:18,638 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:18,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 17:10:18,744 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 17:10:18,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:18,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 17:10:18,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:18,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-19 17:10:18,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:10:18,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-19 17:10:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 17:10:18,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 17:10:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873990881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:19,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 31 [2024-11-19 17:10:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234643773] [2024-11-19 17:10:19,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:19,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 17:10:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 17:10:19,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2024-11-19 17:10:19,118 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:20,544 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2024-11-19 17:10:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 17:10:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 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 45 [2024-11-19 17:10:20,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:20,546 INFO L225 Difference]: With dead ends: 249 [2024-11-19 17:10:20,546 INFO L226 Difference]: Without dead ends: 242 [2024-11-19 17:10:20,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1116, Invalid=5204, Unknown=0, NotChecked=0, Total=6320 [2024-11-19 17:10:20,549 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 257 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:20,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 68 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 17:10:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-19 17:10:20,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 187. [2024-11-19 17:10:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.2956989247311828) internal successors, (241), 186 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) [2024-11-19 17:10:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 241 transitions. [2024-11-19 17:10:20,598 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 241 transitions. Word has length 45 [2024-11-19 17:10:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:20,598 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 241 transitions. [2024-11-19 17:10:20,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 241 transitions. [2024-11-19 17:10:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 17:10:20,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:20,599 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:20,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:20,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:20,800 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:20,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1431802284, now seen corresponding path program 4 times [2024-11-19 17:10:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:20,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085341199] [2024-11-19 17:10:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 17:10:21,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:21,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085341199] [2024-11-19 17:10:21,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085341199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331388446] [2024-11-19 17:10:21,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 17:10:21,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:21,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:21,234 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:21,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 17:10:21,336 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 17:10:21,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:21,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 17:10:21,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:21,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2024-11-19 17:10:21,428 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-19 17:10:21,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2024-11-19 17:10:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 17:10:21,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:21,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2024-11-19 17:10:21,637 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2024-11-19 17:10:21,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 58 [2024-11-19 17:10:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 17:10:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331388446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:21,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:21,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 29 [2024-11-19 17:10:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646734409] [2024-11-19 17:10:21,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:21,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 17:10:21,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 17:10:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-19 17:10:21,656 INFO L87 Difference]: Start difference. First operand 187 states and 241 transitions. Second operand has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:21,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:21,994 INFO L93 Difference]: Finished difference Result 211 states and 269 transitions. [2024-11-19 17:10:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 17:10:21,994 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 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 45 [2024-11-19 17:10:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:21,995 INFO L225 Difference]: With dead ends: 211 [2024-11-19 17:10:21,995 INFO L226 Difference]: Without dead ends: 184 [2024-11-19 17:10:21,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 17:10:21,996 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:21,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 98 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:10:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-19 17:10:22,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 173. [2024-11-19 17:10:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.25) internal successors, (215), 172 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2024-11-19 17:10:22,032 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 45 [2024-11-19 17:10:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:22,032 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2024-11-19 17:10:22,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.896551724137931) internal successors, (84), 29 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2024-11-19 17:10:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 17:10:22,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:22,034 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:22,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:22,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:22,234 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:22,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1422716494, now seen corresponding path program 3 times [2024-11-19 17:10:22,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:22,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071445449] [2024-11-19 17:10:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:22,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 38 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 17:10:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071445449] [2024-11-19 17:10:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071445449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279161917] [2024-11-19 17:10:23,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 17:10:23,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:23,369 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:23,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 17:10:23,479 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 17:10:23,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:23,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 17:10:23,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:23,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 17:10:23,625 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-19 17:10:23,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 42 [2024-11-19 17:10:23,808 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-19 17:10:23,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 71 [2024-11-19 17:10:23,905 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-19 17:10:23,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 57 [2024-11-19 17:10:24,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 17:10:24,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 32 [2024-11-19 17:10:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 17:10:24,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 17:10:47,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279161917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:47,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:47,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 20] total 60 [2024-11-19 17:10:47,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258738367] [2024-11-19 17:10:47,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:47,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-19 17:10:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-19 17:10:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=2997, Unknown=3, NotChecked=0, Total=3540 [2024-11-19 17:10:47,690 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand has 60 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 60 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:52,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:52,804 INFO L93 Difference]: Finished difference Result 250 states and 307 transitions. [2024-11-19 17:10:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-19 17:10:52,805 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 60 states have internal predecessors, (107), 0 states have call successors, (0), 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 45 [2024-11-19 17:10:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:52,805 INFO L225 Difference]: With dead ends: 250 [2024-11-19 17:10:52,805 INFO L226 Difference]: Without dead ends: 142 [2024-11-19 17:10:52,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3872 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=2141, Invalid=10512, Unknown=3, NotChecked=0, Total=12656 [2024-11-19 17:10:52,808 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 178 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:52,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 88 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 17:10:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-19 17:10:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2024-11-19 17:10:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 126 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 151 transitions. [2024-11-19 17:10:52,845 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 151 transitions. Word has length 45 [2024-11-19 17:10:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:52,845 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 151 transitions. [2024-11-19 17:10:52,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.7833333333333334) internal successors, (107), 60 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 151 transitions. [2024-11-19 17:10:52,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 17:10:52,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:52,846 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:52,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:53,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:53,048 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:53,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1510143892, now seen corresponding path program 11 times [2024-11-19 17:10:53,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:53,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249425450] [2024-11-19 17:10:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:53,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 17:10:53,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249425450] [2024-11-19 17:10:53,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249425450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529093985] [2024-11-19 17:10:53,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 17:10:53,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:53,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:53,401 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:53,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 17:10:53,553 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-19 17:10:53,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:53,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 17:10:53,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 17:10:53,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 17:10:54,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529093985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:54,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:54,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-19 17:10:54,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834723514] [2024-11-19 17:10:54,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:54,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 17:10:54,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 17:10:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-19 17:10:54,090 INFO L87 Difference]: Start difference. First operand 127 states and 151 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:55,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:55,068 INFO L93 Difference]: Finished difference Result 191 states and 226 transitions. [2024-11-19 17:10:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 17:10:55,069 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 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 47 [2024-11-19 17:10:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:55,070 INFO L225 Difference]: With dead ends: 191 [2024-11-19 17:10:55,070 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 17:10:55,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-19 17:10:55,071 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:55,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 39 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 17:10:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 17:10:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 113. [2024-11-19 17:10:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 112 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2024-11-19 17:10:55,102 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 47 [2024-11-19 17:10:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:55,102 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2024-11-19 17:10:55,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2024-11-19 17:10:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 17:10:55,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:55,102 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:55,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 17:10:55,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 17:10:55,303 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:55,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash -220752601, now seen corresponding path program 12 times [2024-11-19 17:10:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721991470] [2024-11-19 17:10:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 17:10:55,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721991470] [2024-11-19 17:10:55,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721991470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:55,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953277820] [2024-11-19 17:10:55,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 17:10:55,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:55,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:55,685 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:55,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 17:10:55,826 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-19 17:10:55,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:10:55,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 17:10:55,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 17:10:56,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:10:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 17:10:56,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953277820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:10:56,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:10:56,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-19 17:10:56,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431136630] [2024-11-19 17:10:56,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:10:56,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 17:10:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:10:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 17:10:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-19 17:10:56,607 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:10:57,052 INFO L93 Difference]: Finished difference Result 175 states and 206 transitions. [2024-11-19 17:10:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 17:10:57,053 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 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 48 [2024-11-19 17:10:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:10:57,054 INFO L225 Difference]: With dead ends: 175 [2024-11-19 17:10:57,054 INFO L226 Difference]: Without dead ends: 84 [2024-11-19 17:10:57,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-19 17:10:57,055 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 92 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 17:10:57,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 34 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 17:10:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-19 17:10:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 71. [2024-11-19 17:10:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-11-19 17:10:57,074 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 48 [2024-11-19 17:10:57,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:10:57,074 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-11-19 17:10:57,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:10:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-11-19 17:10:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-19 17:10:57,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:10:57,075 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:10:57,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-19 17:10:57,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 17:10:57,280 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:10:57,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:10:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash 663114381, now seen corresponding path program 13 times [2024-11-19 17:10:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:10:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371970157] [2024-11-19 17:10:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:10:57,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:10:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 17:10:58,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:10:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371970157] [2024-11-19 17:10:58,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371970157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:10:58,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257089357] [2024-11-19 17:10:58,773 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 17:10:58,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:10:58,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:10:58,774 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:10:58,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 17:10:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:10:58,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-19 17:10:58,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:10:58,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 17:10:59,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:59,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:59,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:10:59,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:11:00,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 17:11:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 17:11:00,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 17:11:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 17:11:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257089357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 17:11:02,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 17:11:02,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 54 [2024-11-19 17:11:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061422117] [2024-11-19 17:11:02,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 17:11:02,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-19 17:11:02,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:11:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-19 17:11:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2674, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 17:11:02,904 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:11:11,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:11:11,433 INFO L93 Difference]: Finished difference Result 177 states and 209 transitions. [2024-11-19 17:11:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-19 17:11:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-19 17:11:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:11:11,434 INFO L225 Difference]: With dead ends: 177 [2024-11-19 17:11:11,434 INFO L226 Difference]: Without dead ends: 166 [2024-11-19 17:11:11,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=760, Invalid=9746, Unknown=0, NotChecked=0, Total=10506 [2024-11-19 17:11:11,435 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 82 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-19 17:11:11,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 133 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-19 17:11:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-19 17:11:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2024-11-19 17:11:11,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.178294573643411) internal successors, (152), 129 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:11:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2024-11-19 17:11:11,470 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 53 [2024-11-19 17:11:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:11:11,470 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2024-11-19 17:11:11,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 54 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:11:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2024-11-19 17:11:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-19 17:11:11,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:11:11,471 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:11:11,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-19 17:11:11,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:11:11,672 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:11:11,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:11:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1405212365, now seen corresponding path program 4 times [2024-11-19 17:11:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:11:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809558431] [2024-11-19 17:11:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:11:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:11:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:11:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 39 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-19 17:11:12,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:11:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809558431] [2024-11-19 17:11:12,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809558431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:11:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307604408] [2024-11-19 17:11:12,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 17:11:12,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:11:12,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:11:12,361 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:11:12,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 17:11:12,486 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 17:11:12,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 17:11:12,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-19 17:11:12,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:11:12,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 17:11:12,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-19 17:11:12,905 INFO L349 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2024-11-19 17:11:12,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 64 [2024-11-19 17:11:13,289 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-11-19 17:11:13,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 78 treesize of output 97