./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ms1.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 f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:15:42,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:15:42,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:15:42,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:15:42,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:15:43,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:15:43,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:15:43,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:15:43,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:15:43,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:15:43,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:15:43,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:15:43,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:15:43,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:15:43,030 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:15:43,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:15:43,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:15:43,035 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:15:43,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:15:43,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:15:43,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:15:43,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:15:43,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:15:43,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:15:43,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:15:43,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:15:43,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:15:43,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:15:43,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:15:43,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:15:43,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:15:43,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:15:43,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:15:43,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:15:43,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:15:43,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:15:43,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:15:43,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:15:43,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:15:43,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:15:43,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:15:43,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:15:43,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e [2024-11-08 10:15:43,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:15:43,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:15:43,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:15:43,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:15:43,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:15:43,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms1.c [2024-11-08 10:15:44,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:15:45,069 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:15:45,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms1.c [2024-11-08 10:15:45,079 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38587e865/ade30423dc974fb897fb72ffc5baac02/FLAG8fc5563c6 [2024-11-08 10:15:45,093 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38587e865/ade30423dc974fb897fb72ffc5baac02 [2024-11-08 10:15:45,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:15:45,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:15:45,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:15:45,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:15:45,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:15:45,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7222070d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45, skipping insertion in model container [2024-11-08 10:15:45,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:15:45,350 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/ms1.c[586,599] [2024-11-08 10:15:45,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:15:45,388 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:15:45,401 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/ms1.c[586,599] [2024-11-08 10:15:45,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:15:45,435 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:15:45,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45 WrapperNode [2024-11-08 10:15:45,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:15:45,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:15:45,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:15:45,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:15:45,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,482 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2024-11-08 10:15:45,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:15:45,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:15:45,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:15:45,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:15:45,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,519 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 6, 2, 4]. 43 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0]. The 3 writes are split as follows [0, 0, 1, 2]. [2024-11-08 10:15:45,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:15:45,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:15:45,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:15:45,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:15:45,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (1/1) ... [2024-11-08 10:15:45,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:15:45,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:15:45,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:15:45,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:15:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:15:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:15:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:15:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:15:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 10:15:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:15:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:15:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:15:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:15:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 10:15:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 10:15:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:15:45,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:15:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:15:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:15:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:15:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 10:15:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:15:45,748 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:15:45,753 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:15:45,935 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 10:15:45,936 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:15:45,951 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:15:45,951 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 10:15:45,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:15:45 BoogieIcfgContainer [2024-11-08 10:15:45,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:15:45,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:15:45,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:15:45,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:15:45,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:15:45" (1/3) ... [2024-11-08 10:15:45,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e207211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:15:45, skipping insertion in model container [2024-11-08 10:15:45,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:15:45" (2/3) ... [2024-11-08 10:15:45,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e207211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:15:45, skipping insertion in model container [2024-11-08 10:15:45,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:15:45" (3/3) ... [2024-11-08 10:15:45,963 INFO L112 eAbstractionObserver]: Analyzing ICFG ms1.c [2024-11-08 10:15:45,982 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:15:45,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:15:46,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:15:46,064 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;@42a46ac3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:15:46,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:15:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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) [2024-11-08 10:15:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:15:46,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:46,077 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:46,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:46,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2024-11-08 10:15:46,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:46,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626806546] [2024-11-08 10:15:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:46,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:46,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626806546] [2024-11-08 10:15:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626806546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:15:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:15:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:15:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733036102] [2024-11-08 10:15:46,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:15:46,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:15:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:15:46,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:15:46,329 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:46,343 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-08 10:15:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:15:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-08 10:15:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:46,353 INFO L225 Difference]: With dead ends: 34 [2024-11-08 10:15:46,354 INFO L226 Difference]: Without dead ends: 15 [2024-11-08 10:15:46,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:15:46,361 INFO L432 NwaCegarLoop]: 22 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, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:46,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:15:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-08 10:15:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-08 10:15:46,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-08 10:15:46,393 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-08 10:15:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:46,394 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-08 10:15:46,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-08 10:15:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:15:46,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:46,396 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:46,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:15:46,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:46,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:46,397 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2024-11-08 10:15:46,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:46,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747267294] [2024-11-08 10:15:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:46,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747267294] [2024-11-08 10:15:46,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747267294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:15:46,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:15:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:15:46,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148514087] [2024-11-08 10:15:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:15:46,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:15:46,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:46,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:15:46,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:15:46,569 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:46,624 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-08 10:15:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:15:46,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-08 10:15:46,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:46,630 INFO L225 Difference]: With dead ends: 28 [2024-11-08 10:15:46,631 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 10:15:46,631 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 [2024-11-08 10:15:46,632 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:46,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:15:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 10:15:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-08 10:15:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-08 10:15:46,641 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2024-11-08 10:15:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:46,642 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-08 10:15:46,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-08 10:15:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 10:15:46,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:46,643 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:46,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:15:46,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:46,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2024-11-08 10:15:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:46,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46147328] [2024-11-08 10:15:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 10:15:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46147328] [2024-11-08 10:15:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46147328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:15:46,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:15:46,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:15:46,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085848160] [2024-11-08 10:15:46,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:15:46,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:15:46,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:46,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:15:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:15:46,996 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:47,019 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-08 10:15:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:15:47,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-08 10:15:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:47,021 INFO L225 Difference]: With dead ends: 25 [2024-11-08 10:15:47,021 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 10:15:47,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:15:47,022 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:47,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:15:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 10:15:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-08 10:15:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-08 10:15:47,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2024-11-08 10:15:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:47,032 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-08 10:15:47,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-08 10:15:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 10:15:47,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:47,034 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:47,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:15:47,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:47,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:47,035 INFO L85 PathProgramCache]: Analyzing trace with hash -422196611, now seen corresponding path program 1 times [2024-11-08 10:15:47,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242856915] [2024-11-08 10:15:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:47,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:47,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242856915] [2024-11-08 10:15:47,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242856915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:15:47,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053975887] [2024-11-08 10:15:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:47,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:47,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:15:47,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:15:47,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:15:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:47,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:15:47,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:15:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:47,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:15:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:47,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053975887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:15:47,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:15:47,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 10:15:47,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535318677] [2024-11-08 10:15:47,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:15:47,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:15:47,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:47,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:15:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:15:47,533 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2024-11-08 10:15:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:47,629 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-08 10:15:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:15:47,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 19 [2024-11-08 10:15:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:47,630 INFO L225 Difference]: With dead ends: 39 [2024-11-08 10:15:47,631 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 10:15:47,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:15:47,632 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:47,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:15:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 10:15:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-08 10:15:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-08 10:15:47,637 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-08 10:15:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:47,638 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-08 10:15:47,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2024-11-08 10:15:47,638 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-08 10:15:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 10:15:47,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:47,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:47,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:15:47,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:47,840 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:47,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:47,841 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 2 times [2024-11-08 10:15:47,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:47,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016911419] [2024-11-08 10:15:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:47,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:48,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016911419] [2024-11-08 10:15:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016911419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:15:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729643570] [2024-11-08 10:15:48,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:15:48,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:48,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:15:48,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:15:48,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:15:48,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:15:48,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:15:48,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 10:15:48,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:15:48,606 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 [2024-11-08 10:15:48,777 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 [2024-11-08 10:15:48,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:15:48,929 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 31 treesize of output 23 [2024-11-08 10:15:48,936 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 3 [2024-11-08 10:15:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:49,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:15:49,402 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 18 treesize of output 16 [2024-11-08 10:15:49,406 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 18 treesize of output 12 [2024-11-08 10:15:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729643570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:15:49,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:15:49,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2024-11-08 10:15:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108267527] [2024-11-08 10:15:49,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:15:49,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 10:15:49,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:49,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 10:15:49,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:15:49,441 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:49,907 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-08 10:15:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:15:49,908 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2024-11-08 10:15:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:49,908 INFO L225 Difference]: With dead ends: 38 [2024-11-08 10:15:49,909 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 10:15:49,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1079, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 10:15:49,910 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:49,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 59 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:15:49,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 10:15:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-08 10:15:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 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) [2024-11-08 10:15:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-08 10:15:49,917 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2024-11-08 10:15:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:49,918 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-08 10:15:49,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-08 10:15:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 10:15:49,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:49,919 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:49,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:15:50,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:50,120 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:50,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash -301520475, now seen corresponding path program 3 times [2024-11-08 10:15:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561333909] [2024-11-08 10:15:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:50,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:50,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561333909] [2024-11-08 10:15:50,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561333909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:15:50,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544507842] [2024-11-08 10:15:50,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:15:50,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:15:50,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:15:50,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:15:50,327 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 10:15:50,328 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:15:50,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:15:50,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:15:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:50,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:15:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:50,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544507842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:15:50,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:15:50,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-08 10:15:50,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516442178] [2024-11-08 10:15:50,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:15:50,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:15:50,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:50,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:15:50,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:15:50,467 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:50,563 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-08 10:15:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:15:50,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-08 10:15:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:50,564 INFO L225 Difference]: With dead ends: 45 [2024-11-08 10:15:50,565 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 10:15:50,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:15:50,567 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:50,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:15:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 10:15:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-08 10:15:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-08 10:15:50,578 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2024-11-08 10:15:50,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:50,578 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-08 10:15:50,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-08 10:15:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 10:15:50,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:50,579 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:50,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 10:15:50,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:50,786 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:50,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:50,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1384678109, now seen corresponding path program 4 times [2024-11-08 10:15:50,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:50,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380865422] [2024-11-08 10:15:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:50,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:51,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380865422] [2024-11-08 10:15:51,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380865422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:15:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375330211] [2024-11-08 10:15:51,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:15:51,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:51,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:15:51,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:15:51,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:15:51,564 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:15:51,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:15:51,565 WARN L253 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 10:15:51,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:15:51,572 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 [2024-11-08 10:15:51,621 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 [2024-11-08 10:15:51,779 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 [2024-11-08 10:15:51,870 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 25 treesize of output 17 [2024-11-08 10:15:52,064 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-11-08 10:15:52,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 55 [2024-11-08 10:15:52,075 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 60 treesize of output 33 [2024-11-08 10:15:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 10:15:52,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:15:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 10:15:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375330211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:15:52,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:15:52,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 41 [2024-11-08 10:15:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358687731] [2024-11-08 10:15:52,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:15:52,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 10:15:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 10:15:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1397, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 10:15:52,725 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:54,080 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-11-08 10:15:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 10:15:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 10:15:54,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:54,086 INFO L225 Difference]: With dead ends: 41 [2024-11-08 10:15:54,086 INFO L226 Difference]: Without dead ends: 37 [2024-11-08 10:15:54,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=723, Invalid=3567, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 10:15:54,088 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 107 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:54,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 72 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:15:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-08 10:15:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-08 10:15:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 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) [2024-11-08 10:15:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-08 10:15:54,100 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 26 [2024-11-08 10:15:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:54,100 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-08 10:15:54,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 41 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-08 10:15:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 10:15:54,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:54,101 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:54,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:15:54,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:54,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:54,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash 222381825, now seen corresponding path program 5 times [2024-11-08 10:15:54,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:54,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708645712] [2024-11-08 10:15:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:54,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:54,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708645712] [2024-11-08 10:15:54,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708645712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:15:54,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191632643] [2024-11-08 10:15:54,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:15:54,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:54,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:15:54,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:15:54,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:15:54,581 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-08 10:15:54,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:15:54,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:15:54,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:15:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:54,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:15:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 42 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:54,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191632643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:15:54,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:15:54,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-08 10:15:54,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014753044] [2024-11-08 10:15:54,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:15:54,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 10:15:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:15:54,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 10:15:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:15:54,836 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:15:55,050 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2024-11-08 10:15:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 10:15:55,050 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-08 10:15:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:15:55,051 INFO L225 Difference]: With dead ends: 86 [2024-11-08 10:15:55,051 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 10:15:55,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=897, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:15:55,053 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:15:55,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 46 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:15:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 10:15:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-11-08 10:15:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 41 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) [2024-11-08 10:15:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-08 10:15:55,071 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 35 [2024-11-08 10:15:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:15:55,071 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-08 10:15:55,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:15:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-08 10:15:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 10:15:55,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:15:55,072 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:15:55,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 10:15:55,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:55,273 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:15:55,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:15:55,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1463861959, now seen corresponding path program 6 times [2024-11-08 10:15:55,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:15:55,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644391408] [2024-11-08 10:15:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:15:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:15:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:15:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:57,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:15:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644391408] [2024-11-08 10:15:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644391408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:15:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670789999] [2024-11-08 10:15:57,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:15:57,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:15:57,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:15:57,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:15:57,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:15:57,242 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-08 10:15:57,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:15:57,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 10:15:57,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:15:57,273 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 [2024-11-08 10:15:57,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:15:57,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:15:57,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 10:15:57,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:15:57,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-08 10:15:57,446 INFO L349 Elim1Store]: treesize reduction 64, result has 31.2 percent of original size [2024-11-08 10:15:57,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 50 [2024-11-08 10:15:57,678 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 [2024-11-08 10:15:57,831 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 [2024-11-08 10:15:57,950 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 [2024-11-08 10:15:58,057 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 [2024-11-08 10:15:58,161 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 [2024-11-08 10:15:58,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:15:58,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:15:58,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 37 [2024-11-08 10:15:58,354 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 3 [2024-11-08 10:15:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:15:58,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:15:59,917 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 155 treesize of output 147 [2024-11-08 10:15:59,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:15:59,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 436965 treesize of output 371429 [2024-11-08 10:16:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:00,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670789999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:16:00,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:16:00,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 31] total 65 [2024-11-08 10:16:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867060300] [2024-11-08 10:16:00,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:16:00,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 10:16:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:00,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 10:16:00,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=3614, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 10:16:00,141 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:16:02,126 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-08 10:16:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 10:16:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 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 41 [2024-11-08 10:16:02,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:16:02,128 INFO L225 Difference]: With dead ends: 54 [2024-11-08 10:16:02,128 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:16:02,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2504 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1399, Invalid=7721, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 10:16:02,132 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 155 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:16:02,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 126 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:16:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:16:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-08 10:16:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 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) [2024-11-08 10:16:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-08 10:16:02,141 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 41 [2024-11-08 10:16:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:16:02,142 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-08 10:16:02,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-08 10:16:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 10:16:02,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:02,143 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:02,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:16:02,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:02,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:02,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 284195591, now seen corresponding path program 7 times [2024-11-08 10:16:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661714210] [2024-11-08 10:16:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 73 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:16:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661714210] [2024-11-08 10:16:02,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661714210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:16:02,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538675825] [2024-11-08 10:16:02,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:16:02,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:02,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:02,614 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:16:02,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:16:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:02,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 10:16:02,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:16:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 10:16:02,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:16:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 10:16:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538675825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:16:03,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:16:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 27 [2024-11-08 10:16:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65825042] [2024-11-08 10:16:03,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:16:03,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 10:16:03,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 10:16:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2024-11-08 10:16:03,052 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:16:03,235 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2024-11-08 10:16:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 10:16:03,236 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2024-11-08 10:16:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:16:03,237 INFO L225 Difference]: With dead ends: 81 [2024-11-08 10:16:03,237 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 10:16:03,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 72 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 10:16:03,239 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:16:03,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 63 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:16:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 10:16:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-08 10:16:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-08 10:16:03,250 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 47 [2024-11-08 10:16:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:16:03,252 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-08 10:16:03,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:03,252 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-08 10:16:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 10:16:03,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:03,254 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:03,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 10:16:03,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:03,455 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:03,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2107054537, now seen corresponding path program 8 times [2024-11-08 10:16:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801065875] [2024-11-08 10:16:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:03,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:03,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:16:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801065875] [2024-11-08 10:16:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801065875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:16:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067721784] [2024-11-08 10:16:03,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:16:03,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:03,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:03,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:16:03,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:16:03,867 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:16:03,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:16:03,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 10:16:03,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:16:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:04,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:16:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067721784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:16:04,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:16:04,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-08 10:16:04,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118031503] [2024-11-08 10:16:04,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:16:04,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 10:16:04,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 10:16:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-08 10:16:04,299 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:04,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:16:04,495 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-11-08 10:16:04,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 10:16:04,495 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 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 49 [2024-11-08 10:16:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:16:04,496 INFO L225 Difference]: With dead ends: 85 [2024-11-08 10:16:04,498 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 10:16:04,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 73 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 10:16:04,500 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:16:04,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 49 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:16:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 10:16:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2024-11-08 10:16:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-08 10:16:04,510 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 49 [2024-11-08 10:16:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:16:04,511 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-08 10:16:04,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7241379310344827) internal successors, (79), 29 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-08 10:16:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 10:16:04,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:04,512 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:04,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:16:04,712 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,SelfDestructingSolverStorable10 [2024-11-08 10:16:04,713 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:04,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1527844875, now seen corresponding path program 9 times [2024-11-08 10:16:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573587239] [2024-11-08 10:16:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:08,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:16:08,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573587239] [2024-11-08 10:16:08,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573587239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:16:08,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941062111] [2024-11-08 10:16:08,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:16:08,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:08,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:08,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:16:08,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:16:08,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 10:16:08,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:16:08,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-08 10:16:08,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:16:08,155 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 [2024-11-08 10:16:08,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:16:08,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:08,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 10:16:08,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:08,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-08 10:16:08,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:08,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-08 10:16:08,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:08,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-08 10:16:08,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:08,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-08 10:16:08,855 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 [2024-11-08 10:16:09,036 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 [2024-11-08 10:16:09,177 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 [2024-11-08 10:16:09,286 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 25 treesize of output 17 [2024-11-08 10:16:09,444 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 39 treesize of output 27 [2024-11-08 10:16:09,676 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 49 treesize of output 37 [2024-11-08 10:16:09,904 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 58 treesize of output 46 [2024-11-08 10:16:10,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:10,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:10,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 41 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 116 treesize of output 250 [2024-11-08 10:16:10,386 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 203 treesize of output 140 [2024-11-08 10:16:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:10,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:16:12,817 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 127 treesize of output 123 [2024-11-08 10:16:12,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:12,825 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 15048 treesize of output 14024 [2024-11-08 10:16:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941062111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:16:13,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:16:13,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 38] total 93 [2024-11-08 10:16:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043428163] [2024-11-08 10:16:13,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:16:13,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-08 10:16:13,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-08 10:16:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=7602, Unknown=0, NotChecked=0, Total=8556 [2024-11-08 10:16:13,051 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 93 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:16:19,257 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2024-11-08 10:16:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-08 10:16:19,258 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-08 10:16:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:16:19,258 INFO L225 Difference]: With dead ends: 93 [2024-11-08 10:16:19,259 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 10:16:19,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6243 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2354, Invalid=17106, Unknown=0, NotChecked=0, Total=19460 [2024-11-08 10:16:19,263 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 245 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:16:19,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 165 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 10:16:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 10:16:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-08 10:16:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-08 10:16:19,279 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 51 [2024-11-08 10:16:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:16:19,279 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-08 10:16:19,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-08 10:16:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 10:16:19,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:19,290 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:19,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 10:16:19,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:19,491 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:19,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:19,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1769776755, now seen corresponding path program 10 times [2024-11-08 10:16:19,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:19,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019879392] [2024-11-08 10:16:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:19,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 120 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:16:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019879392] [2024-11-08 10:16:19,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019879392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:16:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536004149] [2024-11-08 10:16:19,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:16:19,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:19,838 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:16:19,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:16:19,930 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:16:19,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:16:19,934 WARN L253 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-08 10:16:19,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:16:19,945 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 [2024-11-08 10:16:19,982 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 [2024-11-08 10:16:20,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:20,040 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 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-08 10:16:20,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:20,112 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 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-08 10:16:20,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:20,183 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 6 case distinctions, treesize of input 64 treesize of output 72 [2024-11-08 10:16:20,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:20,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 87 [2024-11-08 10:16:20,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:20,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 102 [2024-11-08 10:16:20,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:20,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 100 treesize of output 117 [2024-11-08 10:16:20,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:20,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 112 treesize of output 132 [2024-11-08 10:16:20,941 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 [2024-11-08 10:16:21,114 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 25 treesize of output 17 [2024-11-08 10:16:21,345 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 37 treesize of output 25 [2024-11-08 10:16:21,555 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 45 treesize of output 33 [2024-11-08 10:16:21,786 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 52 treesize of output 40 [2024-11-08 10:16:22,015 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 59 treesize of output 47 [2024-11-08 10:16:22,260 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 66 treesize of output 54 [2024-11-08 10:16:22,530 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 73 treesize of output 61 [2024-11-08 10:16:22,792 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 80 treesize of output 68 [2024-11-08 10:16:23,175 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 87 treesize of output 75 [2024-11-08 10:16:23,735 INFO L349 Elim1Store]: treesize reduction 288, result has 55.6 percent of original size [2024-11-08 10:16:23,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 179 treesize of output 404 [2024-11-08 10:16:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 73 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:24,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:16:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 9 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536004149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:16:26,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:16:26,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 45, 45] total 107 [2024-11-08 10:16:26,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35874309] [2024-11-08 10:16:26,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:16:26,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-08 10:16:26,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-08 10:16:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1479, Invalid=9863, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 10:16:26,700 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 107 states, 107 states have (on average 1.5327102803738317) internal successors, (164), 107 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:16:41,001 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2024-11-08 10:16:41,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-08 10:16:41,001 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.5327102803738317) internal successors, (164), 107 states have internal predecessors, (164), 0 states have call successors, (0), 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 59 [2024-11-08 10:16:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:16:41,002 INFO L225 Difference]: With dead ends: 109 [2024-11-08 10:16:41,002 INFO L226 Difference]: Without dead ends: 71 [2024-11-08 10:16:41,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10715 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=4879, Invalid=28793, Unknown=0, NotChecked=0, Total=33672 [2024-11-08 10:16:41,006 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 206 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:16:41,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 208 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 10:16:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-08 10:16:41,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-11-08 10:16:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-11-08 10:16:41,028 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 59 [2024-11-08 10:16:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:16:41,028 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-11-08 10:16:41,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.5327102803738317) internal successors, (164), 107 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-11-08 10:16:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 10:16:41,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:41,029 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:41,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 10:16:41,229 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,SelfDestructingSolverStorable12 [2024-11-08 10:16:41,230 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:41,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1467274603, now seen corresponding path program 11 times [2024-11-08 10:16:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812022112] [2024-11-08 10:16:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 148 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:41,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:16:41,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812022112] [2024-11-08 10:16:41,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812022112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:16:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121529348] [2024-11-08 10:16:41,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:16:41,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:41,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:41,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:16:41,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:16:42,221 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-08 10:16:42,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:16:42,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 10:16:42,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:16:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 176 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:42,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:16:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 157 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:42,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121529348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:16:42,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:16:42,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-08 10:16:42,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357180604] [2024-11-08 10:16:42,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:16:42,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 10:16:42,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:42,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 10:16:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 10:16:42,721 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:16:42,949 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-11-08 10:16:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 10:16:42,950 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 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 64 [2024-11-08 10:16:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:16:42,950 INFO L225 Difference]: With dead ends: 109 [2024-11-08 10:16:42,950 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 10:16:42,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 94 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 10:16:42,951 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 89 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:16:42,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 49 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:16:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 10:16:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-11-08 10:16:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 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) [2024-11-08 10:16:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-11-08 10:16:42,973 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64 [2024-11-08 10:16:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:16:42,973 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-11-08 10:16:42,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6578947368421053) internal successors, (101), 38 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-11-08 10:16:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 10:16:42,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:42,974 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:42,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 10:16:43,175 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,SelfDestructingSolverStorable13 [2024-11-08 10:16:43,175 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:43,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1556195347, now seen corresponding path program 12 times [2024-11-08 10:16:43,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:43,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988045317] [2024-11-08 10:16:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:48,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:16:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988045317] [2024-11-08 10:16:48,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988045317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:16:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344306982] [2024-11-08 10:16:48,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:16:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:48,758 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:16:48,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:16:49,019 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-08 10:16:49,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:16:49,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-08 10:16:49,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:16:49,043 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 [2024-11-08 10:16:49,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:16:49,117 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-08 10:16:49,117 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 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-08 10:16:49,212 INFO L349 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2024-11-08 10:16:49,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-08 10:16:49,332 INFO L349 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2024-11-08 10:16:49,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 58 [2024-11-08 10:16:49,464 INFO L349 Elim1Store]: treesize reduction 80, result has 15.8 percent of original size [2024-11-08 10:16:49,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 61 treesize of output 72 [2024-11-08 10:16:49,618 INFO L349 Elim1Store]: treesize reduction 96, result has 13.5 percent of original size [2024-11-08 10:16:49,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 72 treesize of output 86 [2024-11-08 10:16:49,793 INFO L349 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2024-11-08 10:16:49,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 83 treesize of output 100 [2024-11-08 10:16:49,973 INFO L349 Elim1Store]: treesize reduction 128, result has 10.5 percent of original size [2024-11-08 10:16:49,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 94 treesize of output 114 [2024-11-08 10:16:50,188 INFO L349 Elim1Store]: treesize reduction 144, result has 9.4 percent of original size [2024-11-08 10:16:50,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 105 treesize of output 128 [2024-11-08 10:16:50,606 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 [2024-11-08 10:16:50,846 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 [2024-11-08 10:16:51,007 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 [2024-11-08 10:16:51,157 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 15 [2024-11-08 10:16:51,403 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 33 treesize of output 21 [2024-11-08 10:16:51,666 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 39 treesize of output 27 [2024-11-08 10:16:51,949 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 44 treesize of output 32 [2024-11-08 10:16:52,220 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 49 treesize of output 37 [2024-11-08 10:16:52,532 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 54 treesize of output 42 [2024-11-08 10:16:52,851 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 59 treesize of output 47 [2024-11-08 10:16:53,286 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 64 treesize of output 52 [2024-11-08 10:16:53,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:16:53,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:53,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 117 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 150 treesize of output 334 [2024-11-08 10:16:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 65 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:53,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:16:57,297 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 47 treesize of output 43 [2024-11-08 10:16:57,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:16:57,300 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 169 treesize of output 137 [2024-11-08 10:16:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344306982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:16:57,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:16:57,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 50] total 126 [2024-11-08 10:16:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780596173] [2024-11-08 10:16:57,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:16:57,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-08 10:16:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:57,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-08 10:16:57,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1915, Invalid=13835, Unknown=0, NotChecked=0, Total=15750 [2024-11-08 10:16:57,448 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 126 states, 126 states have (on average 1.4206349206349207) internal successors, (179), 126 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)