./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s3if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s3if.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 e1607ef1a0546f5061a453264a19ed217d8c8fc9b28320eac9d61d4efa33b72e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:18:23,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:18:23,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:18:23,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:18:23,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:18:23,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:18:23,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:18:23,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:18:23,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:18:23,380 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:18:23,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:18:23,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:18:23,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:18:23,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:18:23,382 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:18:23,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:18:23,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:18:23,383 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:18:23,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:18:23,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:18:23,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:18:23,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:18:23,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:18:23,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:18:23,390 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:18:23,390 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:18:23,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:18:23,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:18:23,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:18:23,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:18:23,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:18:23,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:18:23,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:18:23,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:18:23,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:18:23,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:18:23,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:18:23,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:18:23,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:18:23,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:18:23,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:18:23,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:18:23,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1607ef1a0546f5061a453264a19ed217d8c8fc9b28320eac9d61d4efa33b72e [2024-11-08 10:18:23,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:18:23,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:18:23,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:18:23,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:18:23,753 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:18:23,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s3if.c [2024-11-08 10:18:25,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:18:25,349 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:18:25,349 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3if.c [2024-11-08 10:18:25,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17a7dac37/cec0db589ca64286b6f715be51b25fc1/FLAG9b4841fcf [2024-11-08 10:18:25,380 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17a7dac37/cec0db589ca64286b6f715be51b25fc1 [2024-11-08 10:18:25,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:18:25,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:18:25,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:18:25,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:18:25,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:18:25,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0a821a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25, skipping insertion in model container [2024-11-08 10:18:25,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:18:25,606 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3if.c[587,600] [2024-11-08 10:18:25,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:18:25,640 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:18:25,654 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3if.c[587,600] [2024-11-08 10:18:25,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:18:25,678 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:18:25,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25 WrapperNode [2024-11-08 10:18:25,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:18:25,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:18:25,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:18:25,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:18:25,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,711 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-11-08 10:18:25,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:18:25,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:18:25,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:18:25,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:18:25,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,747 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 7, 6, 4]. 37 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 3, 1]. [2024-11-08 10:18:25,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:18:25,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:18:25,766 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:18:25,766 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:18:25,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (1/1) ... [2024-11-08 10:18:25,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:18:25,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:25,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:18:25,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:18:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:18:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:18:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:18:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:18:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 10:18:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:18:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:18:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:18:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:18:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 10:18:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 10:18:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:18:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:18:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:18:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:18:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:18:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 10:18:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:18:25,939 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:18:25,941 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:18:26,125 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 10:18:26,125 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:18:26,139 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:18:26,139 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 10:18:26,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:18:26 BoogieIcfgContainer [2024-11-08 10:18:26,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:18:26,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:18:26,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:18:26,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:18:26,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:18:25" (1/3) ... [2024-11-08 10:18:26,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bea0418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:18:26, skipping insertion in model container [2024-11-08 10:18:26,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:18:25" (2/3) ... [2024-11-08 10:18:26,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bea0418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:18:26, skipping insertion in model container [2024-11-08 10:18:26,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:18:26" (3/3) ... [2024-11-08 10:18:26,149 INFO L112 eAbstractionObserver]: Analyzing ICFG s3if.c [2024-11-08 10:18:26,161 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:18:26,161 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:18:26,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:18:26,212 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;@159e50e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:18:26,213 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:18:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:18:26,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:26,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:26,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:26,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2024-11-08 10:18:26,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:26,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630113415] [2024-11-08 10:18:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:26,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:26,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630113415] [2024-11-08 10:18:26,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630113415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:18:26,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:18:26,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:18:26,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580540270] [2024-11-08 10:18:26,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:18:26,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:18:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:18:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:18:26,445 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:26,455 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-11-08 10:18:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:18:26,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 10:18:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:26,461 INFO L225 Difference]: With dead ends: 34 [2024-11-08 10:18:26,462 INFO L226 Difference]: Without dead ends: 15 [2024-11-08 10:18:26,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:18:26,466 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:26,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:18:26,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-08 10:18:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-08 10:18:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-08 10:18:26,489 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-08 10:18:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:26,490 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-08 10:18:26,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-08 10:18:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 10:18:26,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:26,491 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:26,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:18:26,493 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:26,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2024-11-08 10:18:26,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841587836] [2024-11-08 10:18:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:26,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:26,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841587836] [2024-11-08 10:18:26,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841587836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:18:26,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:18:26,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:18:26,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219256472] [2024-11-08 10:18:26,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:18:26,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:18:26,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:26,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:18:26,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:18:26,663 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:26,733 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-08 10:18:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:18:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 10:18:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:26,734 INFO L225 Difference]: With dead ends: 28 [2024-11-08 10:18:26,735 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 10:18:26,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:18:26,738 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:26,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 10:18:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2024-11-08 10:18:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-08 10:18:26,744 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2024-11-08 10:18:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:26,744 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-08 10:18:26,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-08 10:18:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 10:18:26,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:26,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:26,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:18:26,746 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:26,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:26,746 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2024-11-08 10:18:26,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:26,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702067911] [2024-11-08 10:18:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:26,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:27,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702067911] [2024-11-08 10:18:27,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702067911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:27,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660996414] [2024-11-08 10:18:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:27,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:27,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:27,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:27,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:18:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:27,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 10:18:27,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:27,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:18:27,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:18:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:27,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660996414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:28,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:28,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2024-11-08 10:18:28,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945956180] [2024-11-08 10:18:28,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:28,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 10:18:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 10:18:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:18:28,031 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:28,335 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-11-08 10:18:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:18:28,335 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-08 10:18:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:28,336 INFO L225 Difference]: With dead ends: 34 [2024-11-08 10:18:28,336 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 10:18:28,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:18:28,339 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:28,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 43 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:18:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 10:18:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-11-08 10:18:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-08 10:18:28,349 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 16 [2024-11-08 10:18:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:28,349 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-08 10:18:28,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-08 10:18:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 10:18:28,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:28,351 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:28,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:18:28,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:28,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:28,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 680869797, now seen corresponding path program 1 times [2024-11-08 10:18:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922349536] [2024-11-08 10:18:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:28,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922349536] [2024-11-08 10:18:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922349536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198205319] [2024-11-08 10:18:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:28,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:28,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:28,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:18:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:28,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 10:18:28,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:28,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:18:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:28,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:28,908 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 14 treesize of output 12 [2024-11-08 10:18:28,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 10:18:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:28,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198205319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:28,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:28,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 10:18:28,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123483896] [2024-11-08 10:18:28,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:28,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 10:18:28,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 10:18:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:18:28,928 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:29,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:29,000 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-08 10:18:29,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:18:29,001 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-08 10:18:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:29,001 INFO L225 Difference]: With dead ends: 38 [2024-11-08 10:18:29,001 INFO L226 Difference]: Without dead ends: 26 [2024-11-08 10:18:29,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:18:29,003 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:29,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 42 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:18:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-08 10:18:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-08 10:18:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-08 10:18:29,013 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2024-11-08 10:18:29,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:29,013 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-08 10:18:29,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:29,014 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-08 10:18:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 10:18:29,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:29,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:29,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:18:29,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-08 10:18:29,220 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:29,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1137819675, now seen corresponding path program 2 times [2024-11-08 10:18:29,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:29,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546138196] [2024-11-08 10:18:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:29,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:29,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:29,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546138196] [2024-11-08 10:18:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546138196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254466762] [2024-11-08 10:18:29,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:18:29,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:29,317 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:29,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:18:29,394 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:18:29,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:29,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:18:29,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:29,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254466762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:29,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:29,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 10:18:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623762670] [2024-11-08 10:18:29,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:29,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:18:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:29,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:18:29,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:18:29,513 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:29,640 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-08 10:18:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:18:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-08 10:18:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:29,642 INFO L225 Difference]: With dead ends: 33 [2024-11-08 10:18:29,642 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 10:18:29,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-08 10:18:29,644 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:29,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 10:18:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2024-11-08 10:18:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:29,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-08 10:18:29,654 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 18 [2024-11-08 10:18:29,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:29,654 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-08 10:18:29,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-08 10:18:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 10:18:29,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:29,655 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:29,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 10:18:29,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:29,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:29,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:29,857 INFO L85 PathProgramCache]: Analyzing trace with hash -479454913, now seen corresponding path program 3 times [2024-11-08 10:18:29,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:29,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862358033] [2024-11-08 10:18:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:29,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862358033] [2024-11-08 10:18:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862358033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128296072] [2024-11-08 10:18:29,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:18:29,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:29,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:29,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:18:30,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 10:18:30,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:30,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:18:30,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:30,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128296072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:30,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 10:18:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771471661] [2024-11-08 10:18:30,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:30,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:18:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:18:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:18:30,119 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:30,189 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-08 10:18:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:18:30,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 10:18:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:30,190 INFO L225 Difference]: With dead ends: 37 [2024-11-08 10:18:30,190 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 10:18:30,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:18:30,191 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:30,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 10:18:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-08 10:18:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-08 10:18:30,198 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2024-11-08 10:18:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:30,199 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-08 10:18:30,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-08 10:18:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 10:18:30,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:30,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:30,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 10:18:30,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:30,400 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:30,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash 634982145, now seen corresponding path program 4 times [2024-11-08 10:18:30,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:30,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513412722] [2024-11-08 10:18:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513412722] [2024-11-08 10:18:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513412722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135629020] [2024-11-08 10:18:30,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:18:30,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:30,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:30,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:18:30,904 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:18:30,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:30,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 10:18:30,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:30,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:18:31,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:18:31,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:18:31,324 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 10:18:31,324 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 23 treesize of output 7 [2024-11-08 10:18:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:31,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:31,675 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 10:18:31,676 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 25 treesize of output 9 [2024-11-08 10:18:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:31,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135629020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:31,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:31,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 34 [2024-11-08 10:18:31,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623421632] [2024-11-08 10:18:31,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:31,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 10:18:31,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:31,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 10:18:31,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 10:18:31,939 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:33,162 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-11-08 10:18:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 10:18:33,163 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 10:18:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:33,165 INFO L225 Difference]: With dead ends: 57 [2024-11-08 10:18:33,165 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 10:18:33,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=365, Invalid=2287, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 10:18:33,167 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:33,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 78 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:18:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 10:18:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2024-11-08 10:18:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-11-08 10:18:33,179 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 21 [2024-11-08 10:18:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:33,179 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-11-08 10:18:33,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-11-08 10:18:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 10:18:33,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:33,180 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:33,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 10:18:33,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:33,385 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:33,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 1 times [2024-11-08 10:18:33,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:33,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131090179] [2024-11-08 10:18:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:33,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131090179] [2024-11-08 10:18:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131090179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247469926] [2024-11-08 10:18:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:33,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:33,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:33,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:33,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:18:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:33,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:18:33,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:33,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:18:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:33,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:33,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 10:18:33,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 10:18:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247469926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:33,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-08 10:18:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510265861] [2024-11-08 10:18:33,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:33,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:18:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:18:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:18:33,796 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:33,898 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2024-11-08 10:18:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:18:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 10:18:33,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:33,899 INFO L225 Difference]: With dead ends: 62 [2024-11-08 10:18:33,899 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 10:18:33,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:18:33,901 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:33,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 10:18:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-08 10:18:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-08 10:18:33,915 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2024-11-08 10:18:33,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:33,917 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-08 10:18:33,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:33,917 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-08 10:18:33,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 10:18:33,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:33,918 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:33,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 10:18:34,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:34,118 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:34,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2132829117, now seen corresponding path program 5 times [2024-11-08 10:18:34,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:34,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530754021] [2024-11-08 10:18:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530754021] [2024-11-08 10:18:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530754021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951356668] [2024-11-08 10:18:34,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:18:34,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:34,222 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:34,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:18:34,294 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 10:18:34,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:34,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:18:34,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:34,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951356668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:34,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:34,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-08 10:18:34,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755548773] [2024-11-08 10:18:34,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:34,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:18:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:18:34,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:18:34,428 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:34,627 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-11-08 10:18:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:18:34,628 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 10:18:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:34,629 INFO L225 Difference]: With dead ends: 52 [2024-11-08 10:18:34,629 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 10:18:34,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:18:34,630 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:34,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 33 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 10:18:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-11-08 10:18:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2024-11-08 10:18:34,645 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 23 [2024-11-08 10:18:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:34,646 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2024-11-08 10:18:34,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2024-11-08 10:18:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 10:18:34,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:34,647 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:34,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:34,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:34,848 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:34,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash -981578845, now seen corresponding path program 2 times [2024-11-08 10:18:34,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:34,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329280942] [2024-11-08 10:18:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:34,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:34,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329280942] [2024-11-08 10:18:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329280942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47993589] [2024-11-08 10:18:34,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:18:34,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:34,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:34,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:34,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:18:35,018 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:18:35,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:35,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:18:35,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:35,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:35,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47993589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:35,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:35,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-08 10:18:35,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645902120] [2024-11-08 10:18:35,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:35,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:18:35,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:35,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:18:35,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:18:35,132 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:35,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:35,222 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-08 10:18:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:18:35,224 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-08 10:18:35,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:35,224 INFO L225 Difference]: With dead ends: 56 [2024-11-08 10:18:35,224 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 10:18:35,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:18:35,225 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:35,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 35 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:35,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 10:18:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-08 10:18:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-08 10:18:35,234 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2024-11-08 10:18:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:35,234 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-08 10:18:35,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-08 10:18:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 10:18:35,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:35,235 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:35,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:18:35,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 10:18:35,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:35,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:35,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2121994781, now seen corresponding path program 6 times [2024-11-08 10:18:35,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:35,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385691012] [2024-11-08 10:18:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:36,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:36,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385691012] [2024-11-08 10:18:36,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385691012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:36,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322671669] [2024-11-08 10:18:36,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:18:36,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:36,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:36,036 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:36,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:18:36,107 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 10:18:36,108 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:36,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 10:18:36,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:36,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:18:36,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:18:36,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:18:36,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 10:18:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:18:36,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:36,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:18:36,914 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 39 treesize of output 13 [2024-11-08 10:18:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:18:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322671669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:36,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:36,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 40 [2024-11-08 10:18:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536234437] [2024-11-08 10:18:36,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:36,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 10:18:36,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:36,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 10:18:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 10:18:36,962 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:37,989 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2024-11-08 10:18:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 10:18:37,990 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 10:18:37,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:37,990 INFO L225 Difference]: With dead ends: 59 [2024-11-08 10:18:37,991 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 10:18:37,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=453, Invalid=3969, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 10:18:37,993 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:37,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 98 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:18:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 10:18:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2024-11-08 10:18:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-08 10:18:38,001 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2024-11-08 10:18:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:38,001 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-08 10:18:38,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-08 10:18:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 10:18:38,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:38,002 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:38,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:38,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:38,203 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:38,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2064736479, now seen corresponding path program 3 times [2024-11-08 10:18:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320752318] [2024-11-08 10:18:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320752318] [2024-11-08 10:18:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320752318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286059508] [2024-11-08 10:18:38,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:18:38,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:38,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:38,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:38,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:18:38,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 10:18:38,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:38,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:18:38,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:38,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 10:18:45,364 INFO L349 Elim1Store]: treesize reduction 10, result has 65.5 percent of original size [2024-11-08 10:18:45,365 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 35 treesize of output 28 [2024-11-08 10:18:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:18:45,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:18:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286059508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:45,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 24 [2024-11-08 10:18:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934031364] [2024-11-08 10:18:45,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:45,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 10:18:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 10:18:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=452, Unknown=2, NotChecked=0, Total=552 [2024-11-08 10:18:45,622 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:46,251 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2024-11-08 10:18:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 10:18:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 10:18:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:46,252 INFO L225 Difference]: With dead ends: 47 [2024-11-08 10:18:46,252 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 10:18:46,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=335, Invalid=1145, Unknown=2, NotChecked=0, Total=1482 [2024-11-08 10:18:46,253 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:46,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 52 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:18:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 10:18:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-08 10:18:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:46,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-08 10:18:46,266 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 26 [2024-11-08 10:18:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:46,266 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-08 10:18:46,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:46,267 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-08 10:18:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 10:18:46,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:46,267 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:46,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 10:18:46,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 10:18:46,468 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:46,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash -798779835, now seen corresponding path program 4 times [2024-11-08 10:18:46,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:46,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900989160] [2024-11-08 10:18:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:46,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:46,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:46,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900989160] [2024-11-08 10:18:46,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900989160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:46,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90890636] [2024-11-08 10:18:46,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:18:46,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:46,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:46,644 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:46,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:18:46,717 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:18:46,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:46,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 10:18:46,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:46,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 10:18:46,777 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 36 treesize of output 16 [2024-11-08 10:18:46,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:18:46,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-08 10:18:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:18:46,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:18:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90890636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:47,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:47,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 23 [2024-11-08 10:18:47,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987215981] [2024-11-08 10:18:47,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:47,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:18:47,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:18:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:18:47,070 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:48,324 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2024-11-08 10:18:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 10:18:48,325 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-08 10:18:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:48,325 INFO L225 Difference]: With dead ends: 71 [2024-11-08 10:18:48,325 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 10:18:48,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=772, Invalid=3784, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 10:18:48,327 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:48,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 58 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:18:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 10:18:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2024-11-08 10:18:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-11-08 10:18:48,338 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 29 [2024-11-08 10:18:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:48,338 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-11-08 10:18:48,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-11-08 10:18:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 10:18:48,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:48,339 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:48,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:48,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 10:18:48,541 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:48,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1239650847, now seen corresponding path program 5 times [2024-11-08 10:18:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767422436] [2024-11-08 10:18:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:48,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767422436] [2024-11-08 10:18:48,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767422436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524784674] [2024-11-08 10:18:48,756 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:18:48,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:48,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:48,758 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:48,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:18:48,890 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 10:18:48,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:48,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:18:48,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:49,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:49,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524784674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:49,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:49,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-08 10:18:49,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328980304] [2024-11-08 10:18:49,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:49,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 10:18:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 10:18:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:18:49,093 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:49,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:49,220 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2024-11-08 10:18:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:18:49,221 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-08 10:18:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:49,221 INFO L225 Difference]: With dead ends: 96 [2024-11-08 10:18:49,221 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 10:18:49,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:18:49,222 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:49,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 29 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 10:18:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 37. [2024-11-08 10:18:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-08 10:18:49,231 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 34 [2024-11-08 10:18:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:49,231 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-08 10:18:49,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-08 10:18:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 10:18:49,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:49,232 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:49,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:49,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 10:18:49,432 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:49,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash -338157539, now seen corresponding path program 6 times [2024-11-08 10:18:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:49,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138666241] [2024-11-08 10:18:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 32 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 10:18:49,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138666241] [2024-11-08 10:18:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138666241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:49,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946545087] [2024-11-08 10:18:49,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:18:49,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:49,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:49,822 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) [2024-11-08 10:18:49,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 10:18:49,973 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 10:18:49,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:49,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 10:18:49,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:50,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 10:18:50,056 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 10:18:50,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-08 10:18:50,084 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2024-11-08 10:18:50,084 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 1 case distinctions, treesize of input 33 treesize of output 17 [2024-11-08 10:18:50,238 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 23 treesize of output 11 [2024-11-08 10:18:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:50,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:52,332 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 23 treesize of output 21 [2024-11-08 10:18:52,335 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 42 treesize of output 38 [2024-11-08 10:18:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:52,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946545087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:52,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:52,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 39 [2024-11-08 10:18:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897400208] [2024-11-08 10:18:52,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:52,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 10:18:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 10:18:52,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1205, Unknown=3, NotChecked=0, Total=1482 [2024-11-08 10:18:52,357 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 39 states, 39 states have (on average 2.0) internal successors, (78), 39 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:52,633 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-08 10:18:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:18:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 39 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-08 10:18:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:52,634 INFO L225 Difference]: With dead ends: 53 [2024-11-08 10:18:52,634 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 10:18:52,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=322, Invalid=1481, Unknown=3, NotChecked=0, Total=1806 [2024-11-08 10:18:52,635 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:52,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 69 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:18:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 10:18:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-08 10:18:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-08 10:18:52,645 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 36 [2024-11-08 10:18:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:52,645 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-08 10:18:52,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0) internal successors, (78), 39 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-08 10:18:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 10:18:52,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:52,646 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:52,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:52,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 10:18:52,847 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:52,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash 724113925, now seen corresponding path program 7 times [2024-11-08 10:18:52,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:52,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988743218] [2024-11-08 10:18:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:52,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988743218] [2024-11-08 10:18:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988743218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253865836] [2024-11-08 10:18:53,048 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:18:53,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:53,051 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) [2024-11-08 10:18:53,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 10:18:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:53,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:18:53,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:53,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:53,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253865836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:53,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:53,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 10:18:53,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870236157] [2024-11-08 10:18:53,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:53,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:18:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:18:53,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:18:53,476 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:53,620 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2024-11-08 10:18:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:18:53,621 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 10:18:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:53,621 INFO L225 Difference]: With dead ends: 104 [2024-11-08 10:18:53,621 INFO L226 Difference]: Without dead ends: 65 [2024-11-08 10:18:53,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:18:53,622 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:53,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 38 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:18:53,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-08 10:18:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 42. [2024-11-08 10:18:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-08 10:18:53,632 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 39 [2024-11-08 10:18:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:53,632 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-08 10:18:53,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-08 10:18:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 10:18:53,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:53,633 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:53,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:53,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:53,834 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:53,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:53,834 INFO L85 PathProgramCache]: Analyzing trace with hash -294413625, now seen corresponding path program 8 times [2024-11-08 10:18:53,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:53,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340358136] [2024-11-08 10:18:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:53,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 10:18:54,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:54,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340358136] [2024-11-08 10:18:54,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340358136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:54,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54672802] [2024-11-08 10:18:54,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:18:54,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:54,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:54,321 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) [2024-11-08 10:18:54,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 10:18:54,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:18:54,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:54,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 10:18:54,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:54,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:18:54,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:18:54,481 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 27 treesize of output 11 [2024-11-08 10:18:54,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:18:54,514 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 27 treesize of output 11 [2024-11-08 10:18:54,587 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 50 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 10:18:54,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:54,910 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 23 treesize of output 21 [2024-11-08 10:18:54,914 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 42 treesize of output 38 [2024-11-08 10:18:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 29 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 10:18:54,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54672802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:54,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:54,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 28 [2024-11-08 10:18:54,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394724025] [2024-11-08 10:18:54,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:54,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 10:18:54,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 10:18:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:18:54,991 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:55,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:55,333 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2024-11-08 10:18:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 10:18:55,333 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 10:18:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:55,334 INFO L225 Difference]: With dead ends: 62 [2024-11-08 10:18:55,334 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 10:18:55,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 10:18:55,335 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:55,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:18:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 10:18:55,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2024-11-08 10:18:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-08 10:18:55,345 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 41 [2024-11-08 10:18:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:55,345 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-08 10:18:55,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-08 10:18:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 10:18:55,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:55,346 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:55,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:55,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 10:18:55,548 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:55,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1771002085, now seen corresponding path program 9 times [2024-11-08 10:18:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:55,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067265957] [2024-11-08 10:18:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:55,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:55,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067265957] [2024-11-08 10:18:55,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067265957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:55,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742946061] [2024-11-08 10:18:55,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:18:55,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:55,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:55,795 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:55,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 10:18:55,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 10:18:55,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:55,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 10:18:55,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:56,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:18:56,103 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 [2024-11-08 10:18:56,138 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 [2024-11-08 10:18:56,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:18:56,286 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 17 treesize of output 15 [2024-11-08 10:18:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 10:18:56,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:18:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:18:56,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742946061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:18:56,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:18:56,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 14] total 45 [2024-11-08 10:18:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377158278] [2024-11-08 10:18:56,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:18:56,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 10:18:56,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:18:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 10:18:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 10:18:56,785 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:18:58,766 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2024-11-08 10:18:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-08 10:18:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-08 10:18:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:18:58,767 INFO L225 Difference]: With dead ends: 131 [2024-11-08 10:18:58,767 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 10:18:58,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5303 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1847, Invalid=13159, Unknown=0, NotChecked=0, Total=15006 [2024-11-08 10:18:58,773 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 146 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:18:58,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 72 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:18:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 10:18:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 50. [2024-11-08 10:18:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:58,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-11-08 10:18:58,792 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 44 [2024-11-08 10:18:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:18:58,793 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-11-08 10:18:58,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1333333333333333) internal successors, (96), 45 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:18:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-11-08 10:18:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 10:18:58,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:18:58,794 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:18:58,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 10:18:58,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 10:18:58,995 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:18:58,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:18:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1477938483, now seen corresponding path program 10 times [2024-11-08 10:18:58,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:18:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392649273] [2024-11-08 10:18:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:18:58,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:18:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:18:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 73 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:18:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:18:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392649273] [2024-11-08 10:18:59,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392649273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:18:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555742902] [2024-11-08 10:18:59,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:18:59,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:18:59,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:18:59,293 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:18:59,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 10:18:59,395 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:18:59,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:18:59,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 10:18:59,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:18:59,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-08 10:18:59,440 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 36 treesize of output 16 [2024-11-08 10:18:59,465 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 36 treesize of output 16 [2024-11-08 10:18:59,495 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 36 treesize of output 16 [2024-11-08 10:18:59,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:18:59,749 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 22 treesize of output 15 [2024-11-08 10:18:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 28 proven. 104 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:18:59,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 28 proven. 104 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 10:19:00,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555742902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:00,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 57 [2024-11-08 10:19:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130225624] [2024-11-08 10:19:00,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:00,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-08 10:19:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-08 10:19:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=2741, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 10:19:00,626 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 57 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:13,096 INFO L93 Difference]: Finished difference Result 354 states and 431 transitions. [2024-11-08 10:19:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2024-11-08 10:19:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 10:19:13,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:13,097 INFO L225 Difference]: With dead ends: 354 [2024-11-08 10:19:13,097 INFO L226 Difference]: Without dead ends: 298 [2024-11-08 10:19:13,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39386 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=10651, Invalid=89521, Unknown=0, NotChecked=0, Total=100172 [2024-11-08 10:19:13,105 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 282 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:13,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 71 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 10:19:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-08 10:19:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 55. [2024-11-08 10:19:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2024-11-08 10:19:13,120 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 49 [2024-11-08 10:19:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:13,120 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2024-11-08 10:19:13,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2024-11-08 10:19:13,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 10:19:13,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:13,120 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:13,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 10:19:13,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:13,321 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:13,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1926978967, now seen corresponding path program 11 times [2024-11-08 10:19:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245543299] [2024-11-08 10:19:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 95 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:13,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:13,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245543299] [2024-11-08 10:19:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245543299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:13,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464296550] [2024-11-08 10:19:13,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:19:13,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:13,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:13,654 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:13,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 10:19:14,511 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-08 10:19:14,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:14,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 10:19:14,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 117 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:14,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 117 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464296550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:14,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-08 10:19:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475219230] [2024-11-08 10:19:14,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:14,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 10:19:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 10:19:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-08 10:19:14,916 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:15,140 INFO L93 Difference]: Finished difference Result 182 states and 219 transitions. [2024-11-08 10:19:15,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 10:19:15,141 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 10:19:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:15,142 INFO L225 Difference]: With dead ends: 182 [2024-11-08 10:19:15,142 INFO L226 Difference]: Without dead ends: 109 [2024-11-08 10:19:15,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 80 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 10:19:15,143 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 96 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:15,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 47 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:19:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-08 10:19:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 57. [2024-11-08 10:19:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.125) internal successors, (63), 56 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2024-11-08 10:19:15,158 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 54 [2024-11-08 10:19:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:15,159 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2024-11-08 10:19:15,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2024-11-08 10:19:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 10:19:15,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:15,159 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:15,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:15,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:15,360 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:15,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1372258453, now seen corresponding path program 12 times [2024-11-08 10:19:15,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:15,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014984688] [2024-11-08 10:19:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:15,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 46 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:16,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:16,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014984688] [2024-11-08 10:19:16,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014984688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:16,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256558165] [2024-11-08 10:19:16,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:19:16,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:16,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:16,130 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:16,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 10:19:16,379 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-08 10:19:16,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:16,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 10:19:16,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:16,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 10:19:16,503 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 10:19:16,504 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 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-08 10:19:16,539 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 10:19:16,539 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 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-08 10:19:16,586 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2024-11-08 10:19:16,586 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 1 case distinctions, treesize of input 33 treesize of output 17 [2024-11-08 10:19:16,669 INFO L349 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2024-11-08 10:19:16,669 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 1 case distinctions, treesize of input 37 treesize of output 21 [2024-11-08 10:19:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 66 proven. 106 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 10:19:16,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:41,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-08 10:19:41,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-08 10:19:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 58 proven. 137 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 10:19:41,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256558165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:41,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:41,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 28] total 59 [2024-11-08 10:19:41,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987243802] [2024-11-08 10:19:41,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:41,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 10:19:41,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 10:19:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=2916, Unknown=1, NotChecked=0, Total=3422 [2024-11-08 10:19:41,083 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:46,582 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2024-11-08 10:19:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 10:19:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 10:19:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:46,583 INFO L225 Difference]: With dead ends: 104 [2024-11-08 10:19:46,583 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 10:19:46,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1963 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=1087, Invalid=5717, Unknown=2, NotChecked=0, Total=6806 [2024-11-08 10:19:46,585 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 146 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:46,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 66 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:19:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 10:19:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2024-11-08 10:19:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-08 10:19:46,603 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 56 [2024-11-08 10:19:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:46,603 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-08 10:19:46,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 59 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-08 10:19:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 10:19:46,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:46,604 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:46,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:46,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:46,805 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:46,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash 575023501, now seen corresponding path program 13 times [2024-11-08 10:19:46,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:46,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798024059] [2024-11-08 10:19:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:46,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 120 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798024059] [2024-11-08 10:19:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798024059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340883163] [2024-11-08 10:19:47,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:19:47,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:47,269 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:47,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 10:19:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:47,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 10:19:47,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 145 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:47,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:19:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 145 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340883163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:19:48,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:19:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 10:19:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316200615] [2024-11-08 10:19:48,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:19:48,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 10:19:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:19:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 10:19:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:19:48,009 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:19:48,323 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2024-11-08 10:19:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 10:19:48,324 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 10:19:48,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:19:48,325 INFO L225 Difference]: With dead ends: 190 [2024-11-08 10:19:48,325 INFO L226 Difference]: Without dead ends: 114 [2024-11-08 10:19:48,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 87 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 10:19:48,326 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 117 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:19:48,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 32 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:19:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-08 10:19:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 62. [2024-11-08 10:19:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-11-08 10:19:48,342 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 59 [2024-11-08 10:19:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:19:48,342 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-11-08 10:19:48,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:19:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-11-08 10:19:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 10:19:48,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:19:48,343 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:19:48,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 10:19:48,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 10:19:48,543 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:19:48,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:19:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1664791887, now seen corresponding path program 14 times [2024-11-08 10:19:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:19:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267741452] [2024-11-08 10:19:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:19:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:19:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:19:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 61 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:19:49,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:19:49,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267741452] [2024-11-08 10:19:49,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267741452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:19:49,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178716546] [2024-11-08 10:19:49,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:19:49,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:19:49,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:19:49,461 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:19:49,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 10:19:49,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:19:49,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:19:49,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 10:19:49,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:19:49,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 10:19:49,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:49,821 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 27 treesize of output 11 [2024-11-08 10:19:49,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:49,872 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 27 treesize of output 11 [2024-11-08 10:19:49,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:49,920 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 27 treesize of output 11 [2024-11-08 10:19:49,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:19:49,972 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 27 treesize of output 11 [2024-11-08 10:19:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 88 proven. 131 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 10:19:50,277 INFO L311 TraceCheckSpWp]: Computing backward predicates...