./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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-cav19/array_min_and_copy_shift_sum_add.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 8262fd4bdb4bed8fef0fbefd142e15775d81a64587fab0af0aa2004f91ae895c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:48:49,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:48:49,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:48:49,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:48:49,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:48:49,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:48:49,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:48:49,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:48:49,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:48:49,356 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:48:49,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:48:49,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:48:49,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:48:49,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:48:49,359 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:48:49,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:48:49,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:48:49,361 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:48:49,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:48:49,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:48:49,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:48:49,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:48:49,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:48:49,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:48:49,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:48:49,366 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:48:49,366 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:48:49,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:48:49,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:48:49,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:48:49,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:48:49,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:48:49,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:48:49,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:48:49,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:48:49,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:48:49,371 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:48:49,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:48:49,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:48:49,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:48:49,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:48:49,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:48:49,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8262fd4bdb4bed8fef0fbefd142e15775d81a64587fab0af0aa2004f91ae895c [2024-11-11 15:48:49,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:48:49,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:48:49,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:48:49,653 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:48:49,654 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:48:49,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c [2024-11-11 15:48:51,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:48:51,313 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:48:51,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c [2024-11-11 15:48:51,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68362486/3e5fb528ac934aee8877d69a4e00d763/FLAG191e29930 [2024-11-11 15:48:51,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68362486/3e5fb528ac934aee8877d69a4e00d763 [2024-11-11 15:48:51,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:48:51,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:48:51,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:48:51,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:48:51,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:48:51,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341bb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51, skipping insertion in model container [2024-11-11 15:48:51,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,363 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:48:51,532 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2024-11-11 15:48:51,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:48:51,566 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:48:51,591 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-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2024-11-11 15:48:51,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:48:51,614 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:48:51,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51 WrapperNode [2024-11-11 15:48:51,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:48:51,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:48:51,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:48:51,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:48:51,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,651 INFO L138 Inliner]: procedures = 15, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2024-11-11 15:48:51,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:48:51,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:48:51,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:48:51,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:48:51,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,675 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 1 writes are split as follows [0, 1, 0]. [2024-11-11 15:48:51,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,684 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:48:51,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:48:51,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:48:51,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:48:51,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (1/1) ... [2024-11-11 15:48:51,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:48:51,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:48:51,728 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) [2024-11-11 15:48:51,730 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 [2024-11-11 15:48:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:48:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-11 15:48:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-11 15:48:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:48:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:48:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:48:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:48:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:48:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:48:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:48:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:48:51,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:48:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:48:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:48:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:48:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:48:51,838 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:48:51,839 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:48:52,037 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-11 15:48:52,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:48:52,051 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:48:52,051 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 15:48:52,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:48:52 BoogieIcfgContainer [2024-11-11 15:48:52,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:48:52,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:48:52,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:48:52,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:48:52,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:48:51" (1/3) ... [2024-11-11 15:48:52,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a042188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:48:52, skipping insertion in model container [2024-11-11 15:48:52,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:48:51" (2/3) ... [2024-11-11 15:48:52,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a042188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:48:52, skipping insertion in model container [2024-11-11 15:48:52,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:48:52" (3/3) ... [2024-11-11 15:48:52,058 INFO L112 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2024-11-11 15:48:52,071 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:48:52,071 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:48:52,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:48:52,136 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;@66998626, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:48:52,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:48:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:48:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 15:48:52,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:52,145 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:52,145 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:52,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:52,151 INFO L85 PathProgramCache]: Analyzing trace with hash 449069998, now seen corresponding path program 1 times [2024-11-11 15:48:52,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:52,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180364292] [2024-11-11 15:48:52,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:52,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:48:52,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:52,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180364292] [2024-11-11 15:48:52,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180364292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:48:52,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:48:52,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 15:48:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228868186] [2024-11-11 15:48:52,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:48:52,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 15:48:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:48:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 15:48:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 15:48:52,363 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-11 15:48:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:48:52,376 INFO L93 Difference]: Finished difference Result 57 states and 81 transitions. [2024-11-11 15:48:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 15:48:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-11 15:48:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:48:52,382 INFO L225 Difference]: With dead ends: 57 [2024-11-11 15:48:52,383 INFO L226 Difference]: Without dead ends: 26 [2024-11-11 15:48:52,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 15:48:52,388 INFO L435 NwaCegarLoop]: 36 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, 36 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 [2024-11-11 15:48:52,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:48:52,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-11 15:48:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-11 15:48:52,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:48:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-11 15:48:52,414 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 22 [2024-11-11 15:48:52,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:48:52,414 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-11 15:48:52,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-11 15:48:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-11 15:48:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 15:48:52,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:52,416 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:52,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:48:52,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:52,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:52,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1458862922, now seen corresponding path program 1 times [2024-11-11 15:48:52,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:52,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921635129] [2024-11-11 15:48:52,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:52,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:48:52,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921635129] [2024-11-11 15:48:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921635129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:48:52,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:48:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:48:52,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408852577] [2024-11-11 15:48:52,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:48:52,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:48:52,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:48:52,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:48:52,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:48:52,754 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-11 15:48:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:48:52,781 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-11 15:48:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:48:52,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-11 15:48:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:48:52,783 INFO L225 Difference]: With dead ends: 31 [2024-11-11 15:48:52,784 INFO L226 Difference]: Without dead ends: 27 [2024-11-11 15:48:52,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:48:52,786 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:48:52,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:48:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-11 15:48:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-11 15:48:52,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:48:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-11 15:48:52,796 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2024-11-11 15:48:52,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:48:52,798 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-11 15:48:52,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-11 15:48:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-11 15:48:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 15:48:52,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:52,801 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:52,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 15:48:52,802 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:52,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1754695528, now seen corresponding path program 1 times [2024-11-11 15:48:52,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:52,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967776205] [2024-11-11 15:48:52,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:52,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:48:52,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967776205] [2024-11-11 15:48:52,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967776205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:48:52,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:48:52,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 15:48:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135881602] [2024-11-11 15:48:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:48:52,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 15:48:52,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:48:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 15:48:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:48:52,981 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-11 15:48:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:48:53,069 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2024-11-11 15:48:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 15:48:53,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-11 15:48:53,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:48:53,071 INFO L225 Difference]: With dead ends: 50 [2024-11-11 15:48:53,071 INFO L226 Difference]: Without dead ends: 36 [2024-11-11 15:48:53,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:48:53,073 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:48:53,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:48:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-11 15:48:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2024-11-11 15:48:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-11 15:48:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-11 15:48:53,080 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 24 [2024-11-11 15:48:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:48:53,081 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-11 15:48:53,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-11 15:48:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-11 15:48:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-11 15:48:53,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:53,084 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:53,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 15:48:53,084 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:53,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash 365972882, now seen corresponding path program 1 times [2024-11-11 15:48:53,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:53,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249114817] [2024-11-11 15:48:53,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:53,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:53,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:53,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:48:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:48:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249114817] [2024-11-11 15:48:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249114817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:48:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76002320] [2024-11-11 15:48:53,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:53,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:48:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:48:53,866 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) [2024-11-11 15:48:53,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:48:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:53,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 15:48:53,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:48:54,179 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 1 [2024-11-11 15:48:54,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-11 15:48:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:48:54,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:48:54,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2024-11-11 15:48:54,339 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 32 treesize of output 30 [2024-11-11 15:48:54,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:48:54,405 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 18 treesize of output 15 [2024-11-11 15:48:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:48:54,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76002320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:48:54,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:48:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2024-11-11 15:48:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983685015] [2024-11-11 15:48:54,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:48:54,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-11 15:48:54,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:48:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-11 15:48:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-11 15:48:54,484 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-11 15:48:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:48:54,789 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2024-11-11 15:48:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 15:48:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2024-11-11 15:48:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:48:54,791 INFO L225 Difference]: With dead ends: 55 [2024-11-11 15:48:54,791 INFO L226 Difference]: Without dead ends: 51 [2024-11-11 15:48:54,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:48:54,792 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:48:54,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 198 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:48:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-11 15:48:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-11 15:48:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-11 15:48:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-11 15:48:54,803 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 36 [2024-11-11 15:48:54,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:48:54,803 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-11 15:48:54,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-11 15:48:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-11 15:48:54,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-11 15:48:54,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:54,805 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:54,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-11 15:48:55,009 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 [2024-11-11 15:48:55,010 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:55,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -645144368, now seen corresponding path program 1 times [2024-11-11 15:48:55,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986326346] [2024-11-11 15:48:55,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:55,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:55,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:55,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:48:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:48:55,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986326346] [2024-11-11 15:48:55,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986326346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:48:55,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170027392] [2024-11-11 15:48:55,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:55,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:48:55,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:48:55,571 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) [2024-11-11 15:48:55,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:48:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:55,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 15:48:55,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:48:55,789 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 1 [2024-11-11 15:48:55,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-11 15:48:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:48:55,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:48:55,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2024-11-11 15:48:55,911 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 32 treesize of output 30 [2024-11-11 15:48:55,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:48:55,976 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 18 treesize of output 15 [2024-11-11 15:48:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:48:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170027392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:48:56,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:48:56,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2024-11-11 15:48:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388846519] [2024-11-11 15:48:56,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:48:56,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-11 15:48:56,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:48:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-11 15:48:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-11-11 15:48:56,014 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-11 15:48:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:48:56,300 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2024-11-11 15:48:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 15:48:56,301 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2024-11-11 15:48:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:48:56,302 INFO L225 Difference]: With dead ends: 70 [2024-11-11 15:48:56,303 INFO L226 Difference]: Without dead ends: 66 [2024-11-11 15:48:56,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2024-11-11 15:48:56,304 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:48:56,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 229 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:48:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-11 15:48:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2024-11-11 15:48:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-11 15:48:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-11 15:48:56,313 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 36 [2024-11-11 15:48:56,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:48:56,313 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-11 15:48:56,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-11 15:48:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-11 15:48:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-11 15:48:56,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:56,314 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:56,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 15:48:56,518 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 [2024-11-11 15:48:56,519 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:56,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash -434144652, now seen corresponding path program 2 times [2024-11-11 15:48:56,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:56,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241453691] [2024-11-11 15:48:56,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:56,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:56,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:56,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:48:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 15:48:56,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:56,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241453691] [2024-11-11 15:48:56,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241453691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:48:56,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382612968] [2024-11-11 15:48:56,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:48:56,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:48:56,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:48:56,605 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) [2024-11-11 15:48:56,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:48:56,692 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:48:56,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:48:56,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:48:56,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:48:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 15:48:56,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:48:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 15:48:56,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382612968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:48:56,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:48:56,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-11 15:48:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307837036] [2024-11-11 15:48:56,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:48:56,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 15:48:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:48:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 15:48:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-11 15:48:56,809 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-11 15:48:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:48:56,895 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2024-11-11 15:48:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 15:48:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-11 15:48:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:48:56,899 INFO L225 Difference]: With dead ends: 88 [2024-11-11 15:48:56,899 INFO L226 Difference]: Without dead ends: 68 [2024-11-11 15:48:56,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:48:56,900 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:48:56,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 82 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:48:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-11 15:48:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-11 15:48:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-11 15:48:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2024-11-11 15:48:56,913 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 38 [2024-11-11 15:48:56,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:48:56,913 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2024-11-11 15:48:56,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-11 15:48:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2024-11-11 15:48:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-11 15:48:56,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:56,915 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:56,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:48:57,119 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 [2024-11-11 15:48:57,120 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:57,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:57,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1249498774, now seen corresponding path program 3 times [2024-11-11 15:48:57,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:57,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156094211] [2024-11-11 15:48:57,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:57,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:57,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:57,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:57,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:48:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:57,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:48:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 15:48:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156094211] [2024-11-11 15:48:57,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156094211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:48:57,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002433704] [2024-11-11 15:48:57,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:48:57,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:48:57,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:48:57,212 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) [2024-11-11 15:48:57,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:48:57,277 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 15:48:57,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:48:57,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:48:57,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:48:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 15:48:57,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:48:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 15:48:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002433704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:48:57,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:48:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-11 15:48:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198787658] [2024-11-11 15:48:57,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:48:57,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 15:48:57,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:48:57,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 15:48:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-11 15:48:57,420 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-11 15:48:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:48:57,558 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2024-11-11 15:48:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 15:48:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 46 [2024-11-11 15:48:57,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:48:57,559 INFO L225 Difference]: With dead ends: 66 [2024-11-11 15:48:57,559 INFO L226 Difference]: Without dead ends: 58 [2024-11-11 15:48:57,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-11 15:48:57,561 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:48:57,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 151 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:48:57,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-11 15:48:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2024-11-11 15:48:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-11 15:48:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2024-11-11 15:48:57,567 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 46 [2024-11-11 15:48:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:48:57,568 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2024-11-11 15:48:57,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-11 15:48:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2024-11-11 15:48:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-11 15:48:57,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:48:57,571 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:48:57,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-11 15:48:57,772 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 [2024-11-11 15:48:57,772 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:48:57,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:48:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1662533230, now seen corresponding path program 4 times [2024-11-11 15:48:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:48:57,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634587437] [2024-11-11 15:48:57,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:48:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:48:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:58,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:48:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:58,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:48:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:58,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:48:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:58,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:48:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:48:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:48:58,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:48:58,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634587437] [2024-11-11 15:48:58,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634587437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:48:58,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760452556] [2024-11-11 15:48:58,965 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:48:58,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:48:58,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:48:58,968 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) [2024-11-11 15:48:58,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:48:59,035 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:48:59,036 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:48:59,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-11 15:48:59,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:48:59,420 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 19 treesize of output 13 [2024-11-11 15:48:59,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:48:59,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 35 [2024-11-11 15:48:59,555 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 29 treesize of output 17 [2024-11-11 15:48:59,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:48:59,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:48:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:48:59,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:00,039 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 97 treesize of output 93 [2024-11-11 15:49:00,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:00,050 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 1020 treesize of output 972 [2024-11-11 15:49:00,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:00,326 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 51 treesize of output 49 [2024-11-11 15:49:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760452556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:00,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 17] total 49 [2024-11-11 15:49:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127515169] [2024-11-11 15:49:00,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:00,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-11 15:49:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-11 15:49:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2106, Unknown=0, NotChecked=0, Total=2352 [2024-11-11 15:49:00,489 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 49 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:03,625 INFO L93 Difference]: Finished difference Result 142 states and 181 transitions. [2024-11-11 15:49:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-11 15:49:03,625 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 50 [2024-11-11 15:49:03,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:03,627 INFO L225 Difference]: With dead ends: 142 [2024-11-11 15:49:03,627 INFO L226 Difference]: Without dead ends: 136 [2024-11-11 15:49:03,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2963 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1419, Invalid=8883, Unknown=0, NotChecked=0, Total=10302 [2024-11-11 15:49:03,632 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 183 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:03,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 414 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 15:49:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-11 15:49:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 74. [2024-11-11 15:49:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-11 15:49:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2024-11-11 15:49:03,657 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 50 [2024-11-11 15:49:03,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:03,661 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2024-11-11 15:49:03,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 49 states have internal predecessors, (87), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2024-11-11 15:49:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-11 15:49:03,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:03,662 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:03,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-11 15:49:03,863 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 [2024-11-11 15:49:03,863 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:03,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash -331611476, now seen corresponding path program 1 times [2024-11-11 15:49:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:03,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509873883] [2024-11-11 15:49:03,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:04,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:04,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:04,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:04,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:04,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509873883] [2024-11-11 15:49:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509873883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896555108] [2024-11-11 15:49:04,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:04,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:04,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:04,909 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) [2024-11-11 15:49:04,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 15:49:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:04,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-11 15:49:04,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:05,299 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 19 treesize of output 13 [2024-11-11 15:49:05,394 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 53 treesize of output 43 [2024-11-11 15:49:05,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:05,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2024-11-11 15:49:05,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:05,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-11-11 15:49:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:05,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:05,778 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 97 treesize of output 93 [2024-11-11 15:49:05,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:05,784 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 968 treesize of output 920 [2024-11-11 15:49:06,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:06,024 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 56 treesize of output 53 [2024-11-11 15:49:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896555108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:06,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 48 [2024-11-11 15:49:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026751399] [2024-11-11 15:49:06,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:06,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-11 15:49:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:06,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-11 15:49:06,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2002, Unknown=0, NotChecked=0, Total=2256 [2024-11-11 15:49:06,162 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 48 states, 48 states have (on average 1.75) internal successors, (84), 48 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:07,242 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2024-11-11 15:49:07,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-11 15:49:07,243 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.75) internal successors, (84), 48 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 50 [2024-11-11 15:49:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:07,245 INFO L225 Difference]: With dead ends: 102 [2024-11-11 15:49:07,245 INFO L226 Difference]: Without dead ends: 98 [2024-11-11 15:49:07,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=615, Invalid=3675, Unknown=0, NotChecked=0, Total=4290 [2024-11-11 15:49:07,247 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:07,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 410 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:49:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-11 15:49:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2024-11-11 15:49:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 76 states have internal predecessors, (98), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-11 15:49:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions. [2024-11-11 15:49:07,276 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 50 [2024-11-11 15:49:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:07,277 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions. [2024-11-11 15:49:07,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.75) internal successors, (84), 48 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2024-11-11 15:49:07,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-11 15:49:07,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:07,278 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:07,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 15:49:07,482 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 [2024-11-11 15:49:07,483 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:07,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:07,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1153060140, now seen corresponding path program 2 times [2024-11-11 15:49:07,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:07,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090749332] [2024-11-11 15:49:07,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:07,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:08,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:08,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:08,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:08,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090749332] [2024-11-11 15:49:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090749332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378068179] [2024-11-11 15:49:08,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:49:08,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:08,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:08,399 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) [2024-11-11 15:49:08,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 15:49:08,468 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:49:08,469 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:08,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-11 15:49:08,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:08,794 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 19 treesize of output 13 [2024-11-11 15:49:08,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:08,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 35 [2024-11-11 15:49:08,888 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 29 treesize of output 17 [2024-11-11 15:49:09,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:09,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-11 15:49:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:09,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:09,267 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 97 treesize of output 93 [2024-11-11 15:49:09,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:09,273 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 2018 treesize of output 1922 [2024-11-11 15:49:09,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:09,510 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 51 treesize of output 49 [2024-11-11 15:49:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378068179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:09,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:09,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 51 [2024-11-11 15:49:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873160829] [2024-11-11 15:49:09,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:09,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-11 15:49:09,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:09,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-11 15:49:09,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2276, Unknown=0, NotChecked=0, Total=2550 [2024-11-11 15:49:09,616 INFO L87 Difference]: Start difference. First operand 86 states and 114 transitions. Second operand has 51 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 51 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:11,563 INFO L93 Difference]: Finished difference Result 184 states and 231 transitions. [2024-11-11 15:49:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-11 15:49:11,563 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 51 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 50 [2024-11-11 15:49:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:11,564 INFO L225 Difference]: With dead ends: 184 [2024-11-11 15:49:11,564 INFO L226 Difference]: Without dead ends: 179 [2024-11-11 15:49:11,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1116, Invalid=7256, Unknown=0, NotChecked=0, Total=8372 [2024-11-11 15:49:11,566 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 189 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:11,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 355 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:49:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-11 15:49:11,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 90. [2024-11-11 15:49:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-11 15:49:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2024-11-11 15:49:11,582 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 50 [2024-11-11 15:49:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:11,583 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2024-11-11 15:49:11,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 51 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2024-11-11 15:49:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-11 15:49:11,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:11,584 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:11,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-11 15:49:11,784 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 [2024-11-11 15:49:11,785 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:11,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash -841084566, now seen corresponding path program 2 times [2024-11-11 15:49:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:11,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047726202] [2024-11-11 15:49:11,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:11,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:12,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:12,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:12,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:12,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:12,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047726202] [2024-11-11 15:49:12,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047726202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155061083] [2024-11-11 15:49:12,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:49:12,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:12,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:12,602 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) [2024-11-11 15:49:12,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 15:49:12,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:49:12,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:12,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-11 15:49:12,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:12,969 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 19 treesize of output 13 [2024-11-11 15:49:13,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:13,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 30 [2024-11-11 15:49:13,071 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 23 treesize of output 11 [2024-11-11 15:49:13,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:13,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-11-11 15:49:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:13,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:13,473 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 97 treesize of output 93 [2024-11-11 15:49:13,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:13,477 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 481 treesize of output 457 [2024-11-11 15:49:13,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:13,749 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 56 treesize of output 53 [2024-11-11 15:49:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:49:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155061083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:13,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 50 [2024-11-11 15:49:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61764962] [2024-11-11 15:49:13,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:13,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-11 15:49:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-11 15:49:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2201, Unknown=0, NotChecked=0, Total=2450 [2024-11-11 15:49:13,889 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:15,544 INFO L93 Difference]: Finished difference Result 164 states and 214 transitions. [2024-11-11 15:49:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-11 15:49:15,544 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 50 [2024-11-11 15:49:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:15,545 INFO L225 Difference]: With dead ends: 164 [2024-11-11 15:49:15,545 INFO L226 Difference]: Without dead ends: 160 [2024-11-11 15:49:15,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=920, Invalid=5400, Unknown=0, NotChecked=0, Total=6320 [2024-11-11 15:49:15,547 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 169 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:15,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 366 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 15:49:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-11 15:49:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 84. [2024-11-11 15:49:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 74 states have internal predecessors, (96), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-11 15:49:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 112 transitions. [2024-11-11 15:49:15,562 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 112 transitions. Word has length 50 [2024-11-11 15:49:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:15,562 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 112 transitions. [2024-11-11 15:49:15,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 112 transitions. [2024-11-11 15:49:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-11 15:49:15,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:15,563 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:15,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 15:49:15,764 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 [2024-11-11 15:49:15,764 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:15,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 19833936, now seen corresponding path program 5 times [2024-11-11 15:49:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390731583] [2024-11-11 15:49:15,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:15,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:15,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:15,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:15,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 15:49:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390731583] [2024-11-11 15:49:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390731583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089465087] [2024-11-11 15:49:15,863 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:49:15,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:15,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:15,864 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) [2024-11-11 15:49:15,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 15:49:15,947 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-11 15:49:15,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:15,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:49:15,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 15:49:16,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 15:49:16,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089465087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:16,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:16,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-11 15:49:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369341532] [2024-11-11 15:49:16,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:16,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:49:16,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:49:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:49:16,076 INFO L87 Difference]: Start difference. First operand 84 states and 112 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-11 15:49:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:16,215 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2024-11-11 15:49:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 15:49:16,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 52 [2024-11-11 15:49:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:16,216 INFO L225 Difference]: With dead ends: 159 [2024-11-11 15:49:16,217 INFO L226 Difference]: Without dead ends: 120 [2024-11-11 15:49:16,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-11 15:49:16,217 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:16,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 129 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:49:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-11 15:49:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2024-11-11 15:49:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 90 states have internal predecessors, (112), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-11 15:49:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 128 transitions. [2024-11-11 15:49:16,234 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 128 transitions. Word has length 52 [2024-11-11 15:49:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:16,234 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 128 transitions. [2024-11-11 15:49:16,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-11 15:49:16,235 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 128 transitions. [2024-11-11 15:49:16,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-11 15:49:16,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:16,236 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:16,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-11 15:49:16,437 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 [2024-11-11 15:49:16,437 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:16,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1219923716, now seen corresponding path program 3 times [2024-11-11 15:49:16,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:16,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58709507] [2024-11-11 15:49:16,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:16,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:16,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:16,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:16,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:16,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:16,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-11 15:49:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-11 15:49:16,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58709507] [2024-11-11 15:49:16,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58709507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897387257] [2024-11-11 15:49:16,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:49:16,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:16,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:16,542 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) [2024-11-11 15:49:16,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 15:49:16,615 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-11 15:49:16,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:16,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:49:16,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-11 15:49:16,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-11 15:49:16,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897387257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:16,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:16,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-11 15:49:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690545782] [2024-11-11 15:49:16,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:16,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:49:16,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:49:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:49:16,770 INFO L87 Difference]: Start difference. First operand 100 states and 128 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-11 15:49:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:16,912 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2024-11-11 15:49:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 15:49:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 60 [2024-11-11 15:49:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:16,913 INFO L225 Difference]: With dead ends: 112 [2024-11-11 15:49:16,913 INFO L226 Difference]: Without dead ends: 102 [2024-11-11 15:49:16,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 119 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:49:16,914 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:16,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 124 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:49:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-11 15:49:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 49. [2024-11-11 15:49:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-11 15:49:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2024-11-11 15:49:16,934 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 60 [2024-11-11 15:49:16,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:16,935 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2024-11-11 15:49:16,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-11 15:49:16,935 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2024-11-11 15:49:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 15:49:16,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:16,936 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:16,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-11 15:49:17,136 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 [2024-11-11 15:49:17,137 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:17,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1992349514, now seen corresponding path program 6 times [2024-11-11 15:49:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:17,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595953580] [2024-11-11 15:49:17,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:18,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:18,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:18,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:18,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:18,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-11 15:49:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:49:18,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:18,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595953580] [2024-11-11 15:49:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595953580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:18,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877798020] [2024-11-11 15:49:18,664 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:49:18,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:18,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:18,670 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) [2024-11-11 15:49:18,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 15:49:18,750 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-11 15:49:18,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:18,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-11 15:49:18,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:19,404 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 19 treesize of output 13 [2024-11-11 15:49:19,543 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 33 treesize of output 30 [2024-11-11 15:49:19,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:19,681 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 69 treesize of output 62 [2024-11-11 15:49:19,686 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:19,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 41 [2024-11-11 15:49:20,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:20,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2024-11-11 15:49:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 13 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:49:20,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:20,702 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 207 treesize of output 201 [2024-11-11 15:49:20,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:20,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1228978 treesize of output 1188018 [2024-11-11 15:49:21,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:21,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 81 treesize of output 99 [2024-11-11 15:49:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:49:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877798020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:21,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:21,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 26] total 76 [2024-11-11 15:49:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048249925] [2024-11-11 15:49:21,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:21,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-11 15:49:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:21,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-11 15:49:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=5144, Unknown=0, NotChecked=0, Total=5700 [2024-11-11 15:49:21,626 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-11 15:49:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:35,192 INFO L93 Difference]: Finished difference Result 283 states and 367 transitions. [2024-11-11 15:49:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2024-11-11 15:49:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 64 [2024-11-11 15:49:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:35,194 INFO L225 Difference]: With dead ends: 283 [2024-11-11 15:49:35,194 INFO L226 Difference]: Without dead ends: 276 [2024-11-11 15:49:35,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16545 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=5728, Invalid=44672, Unknown=0, NotChecked=0, Total=50400 [2024-11-11 15:49:35,200 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 502 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:35,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 566 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 15:49:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-11 15:49:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 100. [2024-11-11 15:49:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.302325581395349) internal successors, (112), 86 states have internal predecessors, (112), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-11 15:49:35,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 134 transitions. [2024-11-11 15:49:35,231 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 134 transitions. Word has length 64 [2024-11-11 15:49:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:35,232 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 134 transitions. [2024-11-11 15:49:35,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-11 15:49:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 134 transitions. [2024-11-11 15:49:35,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 15:49:35,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:35,233 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:35,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-11 15:49:35,433 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 [2024-11-11 15:49:35,433 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:35,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2083763064, now seen corresponding path program 4 times [2024-11-11 15:49:35,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:35,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600837505] [2024-11-11 15:49:35,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:35,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:36,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:36,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:36,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:36,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:36,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-11 15:49:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:49:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:36,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600837505] [2024-11-11 15:49:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600837505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68008484] [2024-11-11 15:49:36,836 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:49:36,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:36,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:36,838 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) [2024-11-11 15:49:36,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 15:49:36,924 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:49:36,924 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:36,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-11 15:49:36,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:37,521 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 19 treesize of output 13 [2024-11-11 15:49:37,662 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 33 treesize of output 30 [2024-11-11 15:49:37,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:37,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 50 [2024-11-11 15:49:37,829 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 0 case distinctions, treesize of input 36 treesize of output 23 [2024-11-11 15:49:38,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:38,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 19 [2024-11-11 15:49:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-11 15:49:38,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:38,716 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 207 treesize of output 201 [2024-11-11 15:49:38,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:38,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 324806 treesize of output 314566 [2024-11-11 15:49:39,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:39,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 93 treesize of output 104 [2024-11-11 15:49:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:49:39,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68008484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:39,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:39,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 24] total 73 [2024-11-11 15:49:39,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493653988] [2024-11-11 15:49:39,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:39,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-11 15:49:39,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:39,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-11 15:49:39,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=4840, Unknown=0, NotChecked=0, Total=5256 [2024-11-11 15:49:39,667 INFO L87 Difference]: Start difference. First operand 100 states and 134 transitions. Second operand has 73 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 73 states have internal predecessors, (117), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-11 15:49:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:45,056 INFO L93 Difference]: Finished difference Result 234 states and 291 transitions. [2024-11-11 15:49:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-11 15:49:45,056 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 73 states have internal predecessors, (117), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 64 [2024-11-11 15:49:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:45,058 INFO L225 Difference]: With dead ends: 234 [2024-11-11 15:49:45,058 INFO L226 Difference]: Without dead ends: 229 [2024-11-11 15:49:45,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6226 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2011, Invalid=18869, Unknown=0, NotChecked=0, Total=20880 [2024-11-11 15:49:45,060 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 323 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:45,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 688 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-11 15:49:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-11 15:49:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 96. [2024-11-11 15:49:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 83 states have (on average 1.2891566265060241) internal successors, (107), 83 states have internal predecessors, (107), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-11 15:49:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2024-11-11 15:49:45,097 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 64 [2024-11-11 15:49:45,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:45,097 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2024-11-11 15:49:45,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 73 states have internal predecessors, (117), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-11 15:49:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2024-11-11 15:49:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 15:49:45,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:45,098 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:45,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-11 15:49:45,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-11 15:49:45,299 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:45,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:45,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2027858168, now seen corresponding path program 5 times [2024-11-11 15:49:45,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:45,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191092128] [2024-11-11 15:49:45,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:45,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:46,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:46,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:46,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:46,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:46,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-11 15:49:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:49:46,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:46,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191092128] [2024-11-11 15:49:46,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191092128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:46,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983220909] [2024-11-11 15:49:46,615 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:49:46,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:46,617 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:49:46,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-11 15:49:46,712 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-11 15:49:46,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:46,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-11 15:49:46,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:47,260 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 19 treesize of output 13 [2024-11-11 15:49:47,378 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 35 treesize of output 32 [2024-11-11 15:49:47,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:47,509 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 77 treesize of output 66 [2024-11-11 15:49:47,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:47,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 54 [2024-11-11 15:49:47,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:47,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 21 [2024-11-11 15:49:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 15:49:47,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:48,308 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 207 treesize of output 201 [2024-11-11 15:49:48,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:48,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1872110 treesize of output 1819886 [2024-11-11 15:49:48,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:48,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 81 treesize of output 99 [2024-11-11 15:49:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:49:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983220909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:49:49,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:49:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 24] total 71 [2024-11-11 15:49:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526929037] [2024-11-11 15:49:49,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:49:49,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-11 15:49:49,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:49:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-11 15:49:49,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=4572, Unknown=0, NotChecked=0, Total=4970 [2024-11-11 15:49:49,212 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 71 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 71 states have internal predecessors, (114), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-11 15:49:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:49:56,143 INFO L93 Difference]: Finished difference Result 222 states and 284 transitions. [2024-11-11 15:49:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-11 15:49:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 71 states have internal predecessors, (114), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 64 [2024-11-11 15:49:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:49:56,145 INFO L225 Difference]: With dead ends: 222 [2024-11-11 15:49:56,145 INFO L226 Difference]: Without dead ends: 217 [2024-11-11 15:49:56,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7788 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2441, Invalid=23319, Unknown=0, NotChecked=0, Total=25760 [2024-11-11 15:49:56,147 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 234 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:49:56,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 594 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-11 15:49:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-11 15:49:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 110. [2024-11-11 15:49:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 95 states have internal predecessors, (125), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-11 15:49:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 149 transitions. [2024-11-11 15:49:56,194 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 149 transitions. Word has length 64 [2024-11-11 15:49:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:49:56,194 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 149 transitions. [2024-11-11 15:49:56,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 71 states have internal predecessors, (114), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-11 15:49:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 149 transitions. [2024-11-11 15:49:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 15:49:56,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:49:56,195 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:49:56,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-11 15:49:56,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-11 15:49:56,396 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:49:56,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:49:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1809003450, now seen corresponding path program 6 times [2024-11-11 15:49:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:49:56,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986800922] [2024-11-11 15:49:56,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:49:56,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:49:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:57,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:49:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:57,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:49:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:57,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:49:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:57,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:49:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:57,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-11 15:49:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:49:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:49:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:49:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986800922] [2024-11-11 15:49:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986800922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:49:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362279056] [2024-11-11 15:49:57,652 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:49:57,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:49:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:49:57,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:49:57,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-11 15:49:57,747 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-11 15:49:57,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:49:57,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-11 15:49:57,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:49:58,334 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 19 treesize of output 13 [2024-11-11 15:49:58,446 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 33 treesize of output 30 [2024-11-11 15:49:58,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:58,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 54 [2024-11-11 15:49:58,589 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 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-11 15:49:58,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:58,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 17 [2024-11-11 15:49:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 15:49:58,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:49:59,475 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 207 treesize of output 201 [2024-11-11 15:49:59,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:49:59,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 641558 treesize of output 621078 [2024-11-11 15:50:00,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:50:00,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 105 treesize of output 109 [2024-11-11 15:50:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:50:00,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362279056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:50:00,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:50:00,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 26] total 75 [2024-11-11 15:50:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518024218] [2024-11-11 15:50:00,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:50:00,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-11 15:50:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:50:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-11 15:50:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=4978, Unknown=0, NotChecked=0, Total=5550 [2024-11-11 15:50:00,240 INFO L87 Difference]: Start difference. First operand 110 states and 149 transitions. Second operand has 75 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 75 states have internal predecessors, (116), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-11 15:50:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:50:05,227 INFO L93 Difference]: Finished difference Result 192 states and 258 transitions. [2024-11-11 15:50:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-11 15:50:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 75 states have internal predecessors, (116), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 64 [2024-11-11 15:50:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:50:05,229 INFO L225 Difference]: With dead ends: 192 [2024-11-11 15:50:05,229 INFO L226 Difference]: Without dead ends: 188 [2024-11-11 15:50:05,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4517 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1794, Invalid=13212, Unknown=0, NotChecked=0, Total=15006 [2024-11-11 15:50:05,231 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 229 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 15:50:05,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 521 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 15:50:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-11 15:50:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 104. [2024-11-11 15:50:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.3) internal successors, (117), 90 states have internal predecessors, (117), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-11 15:50:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 139 transitions. [2024-11-11 15:50:05,272 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 139 transitions. Word has length 64 [2024-11-11 15:50:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:50:05,273 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 139 transitions. [2024-11-11 15:50:05,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 75 states have internal predecessors, (116), 13 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-11 15:50:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 139 transitions. [2024-11-11 15:50:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-11 15:50:05,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:50:05,274 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:50:05,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-11 15:50:05,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:50:05,474 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:50:05,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:50:05,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2054471288, now seen corresponding path program 7 times [2024-11-11 15:50:05,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:50:05,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260065999] [2024-11-11 15:50:05,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:50:05,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:50:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:06,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 15:50:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:06,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 15:50:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:06,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 15:50:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:06,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 15:50:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:06,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-11 15:50:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:50:06,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:50:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260065999] [2024-11-11 15:50:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260065999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:50:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975312502] [2024-11-11 15:50:06,830 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:50:06,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:50:06,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:50:06,832 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:50:06,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-11 15:50:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:06,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-11 15:50:06,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:50:07,454 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 19 treesize of output 13 [2024-11-11 15:50:07,580 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 33 treesize of output 30 [2024-11-11 15:50:07,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:50:07,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 55 [2024-11-11 15:50:07,713 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 0 case distinctions, treesize of input 42 treesize of output 29 [2024-11-11 15:50:08,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:50:08,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2024-11-11 15:50:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 15:50:08,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:50:08,514 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 207 treesize of output 201 [2024-11-11 15:50:08,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:50:08,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 662606 treesize of output 642126 [2024-11-11 15:50:09,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:50:09,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 81 treesize of output 99 [2024-11-11 15:50:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-11 15:50:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975312502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:50:09,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:50:09,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 25] total 73 [2024-11-11 15:50:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348569460] [2024-11-11 15:50:09,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:50:09,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-11 15:50:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:50:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-11 15:50:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=4833, Unknown=0, NotChecked=0, Total=5256 [2024-11-11 15:50:09,342 INFO L87 Difference]: Start difference. First operand 104 states and 139 transitions. Second operand has 73 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 73 states have internal predecessors, (114), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)