./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array6_pattern.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-patterns/array6_pattern.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 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:09:16,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:09:16,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:09:16,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:09:16,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:09:16,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:09:16,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:09:16,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:09:16,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:09:16,468 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:09:16,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:09:16,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:09:16,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:09:16,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:09:16,469 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:09:16,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:09:16,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:09:16,470 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:09:16,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:09:16,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:09:16,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:09:16,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:09:16,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:09:16,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:09:16,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:09:16,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:09:16,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:09:16,475 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:09:16,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:09:16,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:09:16,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:09:16,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:09:16,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:09:16,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:09:16,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:09:16,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:09:16,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:09:16,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:09:16,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:09:16,477 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:09:16,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:09:16,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:09:16,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2024-11-08 10:09:16,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:09:16,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:09:16,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:09:16,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:09:16,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:09:16,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array6_pattern.c [2024-11-08 10:09:17,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:09:18,124 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:09:18,124 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array6_pattern.c [2024-11-08 10:09:18,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea057f6b2/84cee5631dcf442abff6f5688dbf926c/FLAG451a20af3 [2024-11-08 10:09:18,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea057f6b2/84cee5631dcf442abff6f5688dbf926c [2024-11-08 10:09:18,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:09:18,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:09:18,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:09:18,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:09:18,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:09:18,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3b636d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18, skipping insertion in model container [2024-11-08 10:09:18,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,564 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:09:18,695 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-patterns/array6_pattern.c[1356,1369] [2024-11-08 10:09:18,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:09:18,720 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:09:18,731 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-patterns/array6_pattern.c[1356,1369] [2024-11-08 10:09:18,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:09:18,756 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:09:18,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18 WrapperNode [2024-11-08 10:09:18,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:09:18,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:09:18,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:09:18,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:09:18,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,802 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2024-11-08 10:09:18,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:09:18,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:09:18,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:09:18,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:09:18,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,841 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-08 10:09:18,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:09:18,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:09:18,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:09:18,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:09:18,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (1/1) ... [2024-11-08 10:09:18,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:09:18,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:18,888 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 10:09:18,891 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 10:09:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:09:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 10:09:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 10:09:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:09:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:09:18,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:09:18,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:09:18,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:09:18,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:09:18,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:09:18,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:09:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:09:18,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:09:18,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:09:18,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:09:18,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:09:19,012 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:09:19,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:09:19,168 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-08 10:09:19,168 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:09:19,180 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:09:19,180 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 10:09:19,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:09:19 BoogieIcfgContainer [2024-11-08 10:09:19,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:09:19,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:09:19,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:09:19,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:09:19,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:09:18" (1/3) ... [2024-11-08 10:09:19,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf9358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:09:19, skipping insertion in model container [2024-11-08 10:09:19,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:09:18" (2/3) ... [2024-11-08 10:09:19,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf9358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:09:19, skipping insertion in model container [2024-11-08 10:09:19,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:09:19" (3/3) ... [2024-11-08 10:09:19,192 INFO L112 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2024-11-08 10:09:19,206 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:09:19,207 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:09:19,264 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:09:19,271 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;@44def6ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:09:19,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:09:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 10:09:19,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:19,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:19,285 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:19,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash 756166908, now seen corresponding path program 1 times [2024-11-08 10:09:19,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309140593] [2024-11-08 10:09:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,457 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 10:09:19,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:19,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309140593] [2024-11-08 10:09:19,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309140593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:09:19,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:09:19,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:09:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481011946] [2024-11-08 10:09:19,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:09:19,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:09:19,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:09:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:09:19,506 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 10:09:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:19,521 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2024-11-08 10:09:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:09:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-08 10:09:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:19,528 INFO L225 Difference]: With dead ends: 47 [2024-11-08 10:09:19,528 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 10:09:19,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 10:09:19,535 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:19,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:09:19,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 10:09:19,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-08 10:09:19,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-08 10:09:19,568 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2024-11-08 10:09:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:19,568 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-08 10:09:19,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 10:09:19,569 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-08 10:09:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 10:09:19,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:19,570 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:19,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:09:19,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:19,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1362045199, now seen corresponding path program 1 times [2024-11-08 10:09:19,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:19,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782694364] [2024-11-08 10:09:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 10:09:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:19,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782694364] [2024-11-08 10:09:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782694364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:09:19,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:09:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:09:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645681314] [2024-11-08 10:09:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:09:19,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:09:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:19,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:09:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:09:19,794 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:19,811 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-08 10:09:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:09:19,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-08 10:09:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:19,812 INFO L225 Difference]: With dead ends: 26 [2024-11-08 10:09:19,812 INFO L226 Difference]: Without dead ends: 22 [2024-11-08 10:09:19,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:09:19,814 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:19,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:09:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-08 10:09:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-08 10:09:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-08 10:09:19,819 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2024-11-08 10:09:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:19,820 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-08 10:09:19,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-08 10:09:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 10:09:19,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:19,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:19,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:09:19,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:19,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash -986355375, now seen corresponding path program 1 times [2024-11-08 10:09:19,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:19,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522923377] [2024-11-08 10:09:19,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:19,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 10:09:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:19,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:19,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522923377] [2024-11-08 10:09:19,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522923377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:09:19,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:09:19,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 10:09:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222989415] [2024-11-08 10:09:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:09:19,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:09:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:09:19,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:09:19,966 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:20,009 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-08 10:09:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:09:20,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-08 10:09:20,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:20,011 INFO L225 Difference]: With dead ends: 41 [2024-11-08 10:09:20,011 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 10:09:20,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:09:20,012 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:20,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 50 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:09:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 10:09:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-08 10:09:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-08 10:09:20,017 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2024-11-08 10:09:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:20,017 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-08 10:09:20,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-08 10:09:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 10:09:20,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:20,033 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:20,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:09:20,033 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:20,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash -261744685, now seen corresponding path program 1 times [2024-11-08 10:09:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728864347] [2024-11-08 10:09:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:20,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:20,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:20,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 10:09:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:09:20,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:20,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728864347] [2024-11-08 10:09:20,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728864347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:20,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890106456] [2024-11-08 10:09:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:20,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:20,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:20,216 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 10:09:20,217 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 10:09:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:20,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 10:09:20,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 10:09:20,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 10:09:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890106456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:20,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:20,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-08 10:09:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556044385] [2024-11-08 10:09:20,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:20,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:09:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:09:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:09:20,502 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 10:09:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:20,642 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2024-11-08 10:09:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 10:09:20,643 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), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2024-11-08 10:09:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:20,646 INFO L225 Difference]: With dead ends: 71 [2024-11-08 10:09:20,646 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 10:09:20,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:09:20,647 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:20,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 83 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:20,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 10:09:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2024-11-08 10:09:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-08 10:09:20,652 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2024-11-08 10:09:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:20,653 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-08 10:09:20,653 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), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 10:09:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-08 10:09:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 10:09:20,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:20,654 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:20,667 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 10:09:20,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:20,856 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:20,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1065956521, now seen corresponding path program 2 times [2024-11-08 10:09:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:20,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016473580] [2024-11-08 10:09:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:20,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:20,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 10:09:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:09:20,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:20,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016473580] [2024-11-08 10:09:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016473580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:20,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952674559] [2024-11-08 10:09:20,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:09:20,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:20,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:20,979 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 10:09:20,980 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 10:09:21,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:09:21,039 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:21,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 10:09:21,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:21,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:21,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952674559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:21,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:21,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2024-11-08 10:09:21,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905582008] [2024-11-08 10:09:21,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:21,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:09:21,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:21,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:09:21,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:09:21,243 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:09:21,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:21,371 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-08 10:09:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 10:09:21,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-08 10:09:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:21,372 INFO L225 Difference]: With dead ends: 39 [2024-11-08 10:09:21,372 INFO L226 Difference]: Without dead ends: 35 [2024-11-08 10:09:21,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-08 10:09:21,373 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:21,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 120 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-08 10:09:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-08 10:09:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-11-08 10:09:21,381 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2024-11-08 10:09:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:21,382 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-11-08 10:09:21,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:09:21,384 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-11-08 10:09:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 10:09:21,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:21,384 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:21,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 10:09:21,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:21,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:21,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1287004325, now seen corresponding path program 3 times [2024-11-08 10:09:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001700952] [2024-11-08 10:09:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:21,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:09:21,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602854705] [2024-11-08 10:09:21,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:09:21,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:21,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:21,635 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 10:09:21,636 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 10:09:21,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 10:09:21,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:21,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-08 10:09:21,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:21,795 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 10:09:21,812 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 10:09:21,911 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 10:09:21,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:09:22,016 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-08 10:09:22,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-08 10:09:22,044 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2024-11-08 10:09:22,045 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 23 treesize of output 22 [2024-11-08 10:09:22,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,618 INFO L349 Elim1Store]: treesize reduction 124, result has 15.6 percent of original size [2024-11-08 10:09:22,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 86 treesize of output 114 [2024-11-08 10:09:22,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:22,651 INFO L349 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2024-11-08 10:09:22,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 86 [2024-11-08 10:09:23,705 INFO L349 Elim1Store]: treesize reduction 16, result has 87.4 percent of original size [2024-11-08 10:09:23,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 141 treesize of output 197 [2024-11-08 10:09:23,908 INFO L349 Elim1Store]: treesize reduction 166, result has 40.1 percent of original size [2024-11-08 10:09:23,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 189 treesize of output 205 [2024-11-08 10:09:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:26,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:27,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:27,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001700952] [2024-11-08 10:09:27,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 10:09:27,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602854705] [2024-11-08 10:09:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602854705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:27,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:09:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-11-08 10:09:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134735792] [2024-11-08 10:09:27,122 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:27,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 10:09:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:27,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 10:09:27,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 10:09:27,124 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:27,814 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2024-11-08 10:09:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 10:09:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-08 10:09:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:27,815 INFO L225 Difference]: With dead ends: 58 [2024-11-08 10:09:27,815 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 10:09:27,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=264, Invalid=1716, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 10:09:27,817 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:27,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 163 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:09:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 10:09:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2024-11-08 10:09:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:09:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-08 10:09:27,828 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 34 [2024-11-08 10:09:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:27,828 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-08 10:09:27,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-08 10:09:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 10:09:27,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:27,829 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:27,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 10:09:28,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:28,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:28,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:28,030 INFO L85 PathProgramCache]: Analyzing trace with hash 192658589, now seen corresponding path program 4 times [2024-11-08 10:09:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840289703] [2024-11-08 10:09:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:28,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:28,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 10:09:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840289703] [2024-11-08 10:09:28,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840289703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338542339] [2024-11-08 10:09:28,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:09:28,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:28,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:28,174 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 10:09:28,175 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 10:09:28,248 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:09:28,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:28,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 10:09:28,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:28,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:28,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338542339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:28,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:28,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 10:09:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600206700] [2024-11-08 10:09:28,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:28,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 10:09:28,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:28,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 10:09:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:09:28,390 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:28,496 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2024-11-08 10:09:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 10:09:28,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-08 10:09:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:28,498 INFO L225 Difference]: With dead ends: 99 [2024-11-08 10:09:28,498 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 10:09:28,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:09:28,502 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:28,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 164 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:28,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 10:09:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2024-11-08 10:09:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:09:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2024-11-08 10:09:28,520 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 36 [2024-11-08 10:09:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:28,520 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2024-11-08 10:09:28,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2024-11-08 10:09:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 10:09:28,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:28,522 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:28,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 10:09:28,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:28,722 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:28,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash 463517727, now seen corresponding path program 5 times [2024-11-08 10:09:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471934394] [2024-11-08 10:09:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:28,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:09:28,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960484692] [2024-11-08 10:09:28,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 10:09:28,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:28,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:28,772 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 10:09:28,774 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 10:09:28,873 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 10:09:28,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:28,876 WARN L253 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-08 10:09:28,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:28,921 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 10:09:28,928 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 10:09:28,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2024-11-08 10:09:28,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:09:29,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:29,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 10:09:29,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:29,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2024-11-08 10:09:29,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:29,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-08 10:09:29,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:29,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 44 [2024-11-08 10:09:29,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,793 INFO L349 Elim1Store]: treesize reduction 187, result has 18.3 percent of original size [2024-11-08 10:09:29,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 49 case distinctions, treesize of input 88 treesize of output 127 [2024-11-08 10:09:29,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:29,866 INFO L349 Elim1Store]: treesize reduction 184, result has 19.7 percent of original size [2024-11-08 10:09:29,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 49 case distinctions, treesize of input 100 treesize of output 142 [2024-11-08 10:09:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:30,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:30,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471934394] [2024-11-08 10:09:30,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 10:09:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960484692] [2024-11-08 10:09:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960484692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:30,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:09:30,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2024-11-08 10:09:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396094731] [2024-11-08 10:09:30,874 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:30,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 10:09:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 10:09:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 10:09:30,875 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 23 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:31,745 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2024-11-08 10:09:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 10:09:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 23 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-08 10:09:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:31,747 INFO L225 Difference]: With dead ends: 100 [2024-11-08 10:09:31,747 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 10:09:31,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=254, Invalid=2002, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 10:09:31,748 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:31,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 230 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:09:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 10:09:31,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2024-11-08 10:09:31,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 72 states have internal predecessors, (80), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 10:09:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2024-11-08 10:09:31,770 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 38 [2024-11-08 10:09:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:31,770 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2024-11-08 10:09:31,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 23 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2024-11-08 10:09:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 10:09:31,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:31,772 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:31,787 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 10:09:31,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:31,973 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:31,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1182829471, now seen corresponding path program 6 times [2024-11-08 10:09:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:31,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832983588] [2024-11-08 10:09:31,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:31,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:32,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:32,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 10:09:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832983588] [2024-11-08 10:09:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832983588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797870737] [2024-11-08 10:09:32,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 10:09:32,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:32,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:32,181 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 10:09:32,184 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 10:09:32,291 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 10:09:32,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:32,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:09:32,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:32,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:32,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797870737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:32,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:32,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-08 10:09:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212415343] [2024-11-08 10:09:32,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:32,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 10:09:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 10:09:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:09:32,437 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:32,567 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2024-11-08 10:09:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 10:09:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-08 10:09:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:32,569 INFO L225 Difference]: With dead ends: 131 [2024-11-08 10:09:32,569 INFO L226 Difference]: Without dead ends: 115 [2024-11-08 10:09:32,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-08 10:09:32,570 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:32,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 121 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-08 10:09:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2024-11-08 10:09:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 83 states have (on average 1.108433734939759) internal successors, (92), 83 states have internal predecessors, (92), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 10:09:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2024-11-08 10:09:32,599 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 40 [2024-11-08 10:09:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:32,599 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2024-11-08 10:09:32,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2024-11-08 10:09:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 10:09:32,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:32,602 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:32,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:09:32,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:32,803 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:32,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1233855711, now seen corresponding path program 7 times [2024-11-08 10:09:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835443322] [2024-11-08 10:09:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:32,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:32,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:33,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:09:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835443322] [2024-11-08 10:09:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835443322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260209935] [2024-11-08 10:09:33,006 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 10:09:33,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:33,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:33,007 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 10:09:33,008 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 10:09:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:33,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:09:33,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:33,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:33,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260209935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:33,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:33,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-08 10:09:33,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063006443] [2024-11-08 10:09:33,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:33,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 10:09:33,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 10:09:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:09:33,242 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:33,459 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2024-11-08 10:09:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 10:09:33,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-08 10:09:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:33,460 INFO L225 Difference]: With dead ends: 118 [2024-11-08 10:09:33,460 INFO L226 Difference]: Without dead ends: 114 [2024-11-08 10:09:33,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 67 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-08 10:09:33,461 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:33,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 231 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-08 10:09:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2024-11-08 10:09:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 78 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 10:09:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2024-11-08 10:09:33,479 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 40 [2024-11-08 10:09:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:33,479 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2024-11-08 10:09:33,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:33,479 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2024-11-08 10:09:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 10:09:33,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:33,480 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:33,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 10:09:33,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:33,681 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:33,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2090888604, now seen corresponding path program 1 times [2024-11-08 10:09:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:33,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435207976] [2024-11-08 10:09:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:09:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501173044] [2024-11-08 10:09:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:33,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:33,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:33,756 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 10:09:33,757 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 10:09:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:33,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-08 10:09:33,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:33,848 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 10:09:33,857 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 10:09:33,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:09:33,908 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 10:09:33,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2024-11-08 10:09:33,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:33,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 10:09:34,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:34,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:34,285 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 10:09:34,299 INFO L349 Elim1Store]: treesize reduction 43, result has 20.4 percent of original size [2024-11-08 10:09:34,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 62 treesize of output 71 [2024-11-08 10:09:34,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:34,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:34,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:34,313 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 10:09:34,313 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 10:09:34,317 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-08 10:09:34,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 78 [2024-11-08 10:09:34,816 INFO L349 Elim1Store]: treesize reduction 75, result has 8.5 percent of original size [2024-11-08 10:09:34,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 78 treesize of output 93 [2024-11-08 10:09:34,835 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-08 10:09:34,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-08 10:09:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:35,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:35,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:35,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435207976] [2024-11-08 10:09:35,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 10:09:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501173044] [2024-11-08 10:09:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501173044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:35,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:09:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-11-08 10:09:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489731054] [2024-11-08 10:09:35,755 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:35,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 10:09:35,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 10:09:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 10:09:35,756 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:09:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:36,518 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-11-08 10:09:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 10:09:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2024-11-08 10:09:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:36,520 INFO L225 Difference]: With dead ends: 97 [2024-11-08 10:09:36,520 INFO L226 Difference]: Without dead ends: 69 [2024-11-08 10:09:36,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 10:09:36,521 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:36,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 166 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 10:09:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-08 10:09:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-08 10:09:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 10:09:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2024-11-08 10:09:36,546 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 42 [2024-11-08 10:09:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:36,546 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2024-11-08 10:09:36,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 10:09:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2024-11-08 10:09:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 10:09:36,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:36,548 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:36,563 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 10:09:36,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 10:09:36,748 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:36,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:36,749 INFO L85 PathProgramCache]: Analyzing trace with hash -271130909, now seen corresponding path program 8 times [2024-11-08 10:09:36,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:36,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850441503] [2024-11-08 10:09:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:36,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:09:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312766666] [2024-11-08 10:09:36,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:09:36,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:36,796 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 10:09:36,797 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 10:09:36,873 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:09:36,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:36,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-08 10:09:36,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:36,897 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 10:09:36,900 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 10:09:36,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2024-11-08 10:09:36,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:09:37,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:37,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2024-11-08 10:09:37,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:37,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 10:09:37,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:37,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-08 10:09:37,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:37,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 44 [2024-11-08 10:09:37,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:37,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 56 [2024-11-08 10:09:37,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:37,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-08 10:09:37,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:37,842 INFO L349 Elim1Store]: treesize reduction 344, result has 20.6 percent of original size [2024-11-08 10:09:37,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 16 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 74 case distinctions, treesize of input 118 treesize of output 182 [2024-11-08 10:09:37,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:37,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:37,975 INFO L349 Elim1Store]: treesize reduction 344, result has 20.6 percent of original size [2024-11-08 10:09:37,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 16 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 74 case distinctions, treesize of input 102 treesize of output 166 [2024-11-08 10:09:41,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:41,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 395 treesize of output 451 [2024-11-08 10:09:41,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:41,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 18 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 347 treesize of output 367 [2024-11-08 10:09:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:53,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:54,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:54,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850441503] [2024-11-08 10:09:54,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 10:09:54,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312766666] [2024-11-08 10:09:54,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312766666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:54,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:09:54,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2024-11-08 10:09:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437609530] [2024-11-08 10:09:54,225 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:54,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 10:09:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 10:09:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 10:09:54,226 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 24 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:55,175 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2024-11-08 10:09:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 10:09:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 24 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-08 10:09:55,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:55,177 INFO L225 Difference]: With dead ends: 99 [2024-11-08 10:09:55,177 INFO L226 Difference]: Without dead ends: 95 [2024-11-08 10:09:55,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=271, Invalid=1891, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 10:09:55,178 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:55,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 270 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:09:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-08 10:09:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2024-11-08 10:09:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:09:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2024-11-08 10:09:55,194 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 42 [2024-11-08 10:09:55,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:55,194 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2024-11-08 10:09:55,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 24 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 10:09:55,194 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2024-11-08 10:09:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 10:09:55,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:55,195 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:55,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 10:09:55,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:55,395 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:55,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2121898906, now seen corresponding path program 2 times [2024-11-08 10:09:55,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:55,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319093377] [2024-11-08 10:09:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:55,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:55,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:55,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 10:09:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:55,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 10:09:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:09:55,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319093377] [2024-11-08 10:09:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319093377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:55,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737644283] [2024-11-08 10:09:55,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:09:55,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:55,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:55,526 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 10:09:55,527 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 10:09:55,591 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:09:55,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:55,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 10:09:55,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 10:09:55,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 10:09:55,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737644283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:55,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:55,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 10:09:55,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664081228] [2024-11-08 10:09:55,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:55,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 10:09:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 10:09:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:09:55,723 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:55,850 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2024-11-08 10:09:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 10:09:55,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2024-11-08 10:09:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:55,851 INFO L225 Difference]: With dead ends: 94 [2024-11-08 10:09:55,851 INFO L226 Difference]: Without dead ends: 90 [2024-11-08 10:09:55,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:09:55,852 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:55,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 144 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-08 10:09:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-08 10:09:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 71 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:09:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-11-08 10:09:55,867 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 44 [2024-11-08 10:09:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:55,868 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-11-08 10:09:55,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-11-08 10:09:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 10:09:55,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:55,868 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:55,881 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 10:09:56,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 10:09:56,069 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:56,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1489435173, now seen corresponding path program 9 times [2024-11-08 10:09:56,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:56,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358374438] [2024-11-08 10:09:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:56,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:56,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:09:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358374438] [2024-11-08 10:09:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358374438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814711091] [2024-11-08 10:09:56,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:09:56,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:56,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:56,223 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 10:09:56,224 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 10:09:56,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 10:09:56,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:56,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:09:56,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:56,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814711091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:56,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:56,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 10:09:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736566805] [2024-11-08 10:09:56,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:56,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:09:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:09:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:09:56,509 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:56,618 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2024-11-08 10:09:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 10:09:56,618 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2024-11-08 10:09:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:56,619 INFO L225 Difference]: With dead ends: 125 [2024-11-08 10:09:56,619 INFO L226 Difference]: Without dead ends: 107 [2024-11-08 10:09:56,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 73 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:09:56,620 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:56,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 77 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-08 10:09:56,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 90. [2024-11-08 10:09:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 10:09:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2024-11-08 10:09:56,639 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 44 [2024-11-08 10:09:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:56,640 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2024-11-08 10:09:56,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2024-11-08 10:09:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 10:09:56,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:56,640 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:56,653 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 10:09:56,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 10:09:56,841 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:56,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -302141211, now seen corresponding path program 10 times [2024-11-08 10:09:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:56,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339000849] [2024-11-08 10:09:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:57,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:09:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:57,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 10:09:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:09:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:57,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:09:57,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339000849] [2024-11-08 10:09:57,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339000849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:09:57,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21647037] [2024-11-08 10:09:57,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:09:57,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:57,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:57,018 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 10:09:57,019 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 10:09:57,126 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:09:57,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:57,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:09:57,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:09:57,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:09:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 10:09:57,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21647037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:09:57,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:09:57,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 10:09:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692645731] [2024-11-08 10:09:57,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:09:57,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 10:09:57,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:09:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 10:09:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-08 10:09:57,296 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:09:57,503 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2024-11-08 10:09:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 10:09:57,504 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2024-11-08 10:09:57,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:09:57,504 INFO L225 Difference]: With dead ends: 110 [2024-11-08 10:09:57,504 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 10:09:57,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 10:09:57,505 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:09:57,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 162 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:09:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 10:09:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2024-11-08 10:09:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 79 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 10:09:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2024-11-08 10:09:57,524 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 44 [2024-11-08 10:09:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:09:57,524 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2024-11-08 10:09:57,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 10:09:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2024-11-08 10:09:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 10:09:57,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:09:57,525 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:09:57,537 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 10:09:57,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 10:09:57,726 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:09:57,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:09:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1017850600, now seen corresponding path program 3 times [2024-11-08 10:09:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:09:57,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999503805] [2024-11-08 10:09:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:09:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:09:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:09:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245358495] [2024-11-08 10:09:57,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:09:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:09:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:09:57,787 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 10:09:57,788 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 10:09:57,912 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 10:09:57,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:09:57,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-08 10:09:57,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:09:57,953 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 10:09:57,956 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 10:09:57,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 10:09:58,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2024-11-08 10:09:58,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:58,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2024-11-08 10:09:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:58,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2024-11-08 10:09:58,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:58,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2024-11-08 10:09:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 10:09:58,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-08 10:09:58,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,728 INFO L349 Elim1Store]: treesize reduction 206, result has 21.1 percent of original size [2024-11-08 10:09:58,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 49 case distinctions, treesize of input 112 treesize of output 156 [2024-11-08 10:09:58,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:09:58,834 INFO L349 Elim1Store]: treesize reduction 206, result has 21.1 percent of original size [2024-11-08 10:09:58,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 49 case distinctions, treesize of input 116 treesize of output 160 [2024-11-08 10:10:00,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:00,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:05,959 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 761 DAG size of output: 269 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-08 10:10:05,959 INFO L349 Elim1Store]: treesize reduction 2696, result has 21.2 percent of original size [2024-11-08 10:10:05,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 18 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 396 case distinctions, treesize of input 618 treesize of output 1218 [2024-11-08 10:10:06,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:06,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 10:10:10,756 INFO L349 Elim1Store]: treesize reduction 2688, result has 21.5 percent of original size [2024-11-08 10:10:10,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 24 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 396 case distinctions, treesize of input 482 treesize of output 1090