./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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-tiling/tcpy.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 a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:06:57,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:06:57,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:06:57,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:06:57,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:06:57,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:06:57,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:06:57,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:06:57,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:06:57,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:06:57,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:06:57,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:06:57,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:06:57,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:06:57,612 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:06:57,613 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:06:57,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:06:57,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:06:57,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:06:57,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:06:57,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:06:57,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:06:57,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:06:57,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:06:57,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:06:57,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:06:57,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:06:57,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:06:57,621 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:06:57,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:06:57,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:06:57,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:06:57,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:06:57,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:06:57,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:06:57,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:06:57,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:06:57,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:06:57,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:06:57,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:06:57,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:06:57,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:06:57,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2024-11-09 18:06:57,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:06:57,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:06:57,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:06:57,943 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:06:57,944 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:06:57,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/tcpy.c [2024-11-09 18:06:59,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:06:59,627 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:06:59,629 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/tcpy.c [2024-11-09 18:06:59,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/993ba1c7f/9688fbc12f534e24b69884de563e8acd/FLAGdefba7cda [2024-11-09 18:06:59,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/993ba1c7f/9688fbc12f534e24b69884de563e8acd [2024-11-09 18:06:59,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:06:59,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:06:59,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:06:59,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:06:59,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:06:59,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecfb35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59, skipping insertion in model container [2024-11-09 18:06:59,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:06:59,825 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-tiling/tcpy.c[395,408] [2024-11-09 18:06:59,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:06:59,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:06:59,868 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-tiling/tcpy.c[395,408] [2024-11-09 18:06:59,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:06:59,893 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:06:59,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59 WrapperNode [2024-11-09 18:06:59,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:06:59,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:06:59,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:06:59,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:06:59,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,928 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2024-11-09 18:06:59,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:06:59,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:06:59,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:06:59,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:06:59,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,956 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 7, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 3 writes are split as follows [0, 0, 1, 2]. [2024-11-09 18:06:59,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,962 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:06:59,969 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:06:59,969 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:06:59,969 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:06:59,973 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (1/1) ... [2024-11-09 18:06:59,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:06:59,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:00,004 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) [2024-11-09 18:07:00,007 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 [2024-11-09 18:07:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:07:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:07:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:07:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:07:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 18:07:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:07:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:07:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:07:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 18:07:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 18:07:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:07:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:07:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:07:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:07:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:07:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 18:07:00,214 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:07:00,217 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:07:00,454 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 18:07:00,454 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:07:00,467 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:07:00,467 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:07:00,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:07:00 BoogieIcfgContainer [2024-11-09 18:07:00,468 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:07:00,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:07:00,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:07:00,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:07:00,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:06:59" (1/3) ... [2024-11-09 18:07:00,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f3403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:07:00, skipping insertion in model container [2024-11-09 18:07:00,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:06:59" (2/3) ... [2024-11-09 18:07:00,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f3403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:07:00, skipping insertion in model container [2024-11-09 18:07:00,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:07:00" (3/3) ... [2024-11-09 18:07:00,485 INFO L112 eAbstractionObserver]: Analyzing ICFG tcpy.c [2024-11-09 18:07:00,511 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:07:00,512 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:07:00,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:07:00,630 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;@33ea3db3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:07:00,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:07:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:07:00,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:00,656 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:00,656 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:00,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:00,670 INFO L85 PathProgramCache]: Analyzing trace with hash 528576400, now seen corresponding path program 1 times [2024-11-09 18:07:00,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170263029] [2024-11-09 18:07:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:00,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170263029] [2024-11-09 18:07:00,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170263029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:07:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:07:00,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005837788] [2024-11-09 18:07:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:01,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:07:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:07:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:07:01,042 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:01,057 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2024-11-09 18:07:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:07:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 18:07:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:01,067 INFO L225 Difference]: With dead ends: 42 [2024-11-09 18:07:01,067 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 18:07:01,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:07:01,073 INFO L432 NwaCegarLoop]: 27 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, 27 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 [2024-11-09 18:07:01,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:07:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 18:07:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 18:07:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-09 18:07:01,124 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2024-11-09 18:07:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:01,127 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-09 18:07:01,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-09 18:07:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 18:07:01,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:01,129 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:01,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:07:01,130 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:01,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1080834191, now seen corresponding path program 1 times [2024-11-09 18:07:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:01,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509121863] [2024-11-09 18:07:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:01,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509121863] [2024-11-09 18:07:01,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509121863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:01,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:07:01,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:07:01,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025143703] [2024-11-09 18:07:01,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:01,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:07:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:07:01,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:07:01,444 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:01,510 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-09 18:07:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:07:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 18:07:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:01,511 INFO L225 Difference]: With dead ends: 33 [2024-11-09 18:07:01,515 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 18:07:01,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:07:01,516 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:01,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:01,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 18:07:01,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 18:07:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-09 18:07:01,526 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2024-11-09 18:07:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:01,527 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-09 18:07:01,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-09 18:07:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 18:07:01,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:01,528 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:01,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:07:01,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:01,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash 563610608, now seen corresponding path program 1 times [2024-11-09 18:07:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695074507] [2024-11-09 18:07:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695074507] [2024-11-09 18:07:01,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695074507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556581571] [2024-11-09 18:07:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:01,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:01,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:01,799 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) [2024-11-09 18:07:01,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:07:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:01,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:07:01,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:01,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556581571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:01,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:01,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 18:07:01,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261179030] [2024-11-09 18:07:01,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:01,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:07:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:07:01,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:07:01,946 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:01,976 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-09 18:07:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:07:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 18:07:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:01,977 INFO L225 Difference]: With dead ends: 35 [2024-11-09 18:07:01,977 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 18:07:01,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:07:01,979 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:01,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 35 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:07:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 18:07:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 18:07:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-09 18:07:01,982 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 18 [2024-11-09 18:07:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:01,983 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-09 18:07:01,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-09 18:07:01,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:07:01,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:01,984 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:01,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:02,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:02,186 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:02,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1727953681, now seen corresponding path program 2 times [2024-11-09 18:07:02,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:02,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763810734] [2024-11-09 18:07:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:02,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:07:02,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:02,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763810734] [2024-11-09 18:07:02,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763810734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:07:02,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:07:02,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 18:07:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321880212] [2024-11-09 18:07:02,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:07:02,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 18:07:02,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 18:07:02,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:07:02,364 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:02,388 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-09 18:07:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 18:07:02,389 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 18:07:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:02,389 INFO L225 Difference]: With dead ends: 39 [2024-11-09 18:07:02,389 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 18:07:02,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:07:02,391 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:02,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:07:02,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 18:07:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2024-11-09 18:07:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2024-11-09 18:07:02,394 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2024-11-09 18:07:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:02,395 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2024-11-09 18:07:02,395 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2024-11-09 18:07:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 18:07:02,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:02,396 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:02,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:07:02,396 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:02,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1438023728, now seen corresponding path program 1 times [2024-11-09 18:07:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:02,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113161739] [2024-11-09 18:07:02,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:07:02,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:02,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113161739] [2024-11-09 18:07:02,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113161739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:02,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170757572] [2024-11-09 18:07:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:02,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:02,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:02,796 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) [2024-11-09 18:07:02,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:07:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:02,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 18:07:02,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:03,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-09 18:07:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:07:03,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:03,352 INFO L349 Elim1Store]: treesize reduction 10, result has 67.7 percent of original size [2024-11-09 18:07:03,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 46 [2024-11-09 18:07:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:07:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170757572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:03,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 6] total 17 [2024-11-09 18:07:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119011944] [2024-11-09 18:07:03,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:03,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 18:07:03,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 18:07:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-09 18:07:03,387 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:03,564 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2024-11-09 18:07:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 18:07:03,565 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 18:07:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:03,566 INFO L225 Difference]: With dead ends: 31 [2024-11-09 18:07:03,566 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 18:07:03,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:07:03,567 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:03,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 76 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:03,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 18:07:03,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-09 18:07:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-09 18:07:03,576 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2024-11-09 18:07:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:03,576 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-09 18:07:03,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-09 18:07:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 18:07:03,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:03,580 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:03,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:07:03,780 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 [2024-11-09 18:07:03,781 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:03,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1787876201, now seen corresponding path program 1 times [2024-11-09 18:07:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751931330] [2024-11-09 18:07:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:04,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751931330] [2024-11-09 18:07:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751931330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483053475] [2024-11-09 18:07:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:04,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:04,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:07:04,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:07:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:04,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 18:07:04,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:04,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:07:04,437 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 24 treesize of output 25 [2024-11-09 18:07:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:04,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:04,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2024-11-09 18:07:04,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2024-11-09 18:07:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483053475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:04,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 31 [2024-11-09 18:07:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112232674] [2024-11-09 18:07:04,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:04,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 18:07:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:04,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 18:07:04,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-11-09 18:07:04,854 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:05,274 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2024-11-09 18:07:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 18:07:05,275 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-09 18:07:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:05,275 INFO L225 Difference]: With dead ends: 92 [2024-11-09 18:07:05,276 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 18:07:05,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 18:07:05,277 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 185 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:05,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 205 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:07:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 18:07:05,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2024-11-09 18:07:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-11-09 18:07:05,286 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 26 [2024-11-09 18:07:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:05,286 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-11-09 18:07:05,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-11-09 18:07:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 18:07:05,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:05,287 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:05,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:05,487 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 [2024-11-09 18:07:05,488 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:05,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -388817442, now seen corresponding path program 2 times [2024-11-09 18:07:05,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:05,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071539083] [2024-11-09 18:07:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:07:05,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071539083] [2024-11-09 18:07:05,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071539083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243461759] [2024-11-09 18:07:05,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:07:05,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:05,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:05,574 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) [2024-11-09 18:07:05,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:07:05,631 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:07:05,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:05,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:07:05,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:07:05,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:07:05,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243461759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:05,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 18:07:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351086498] [2024-11-09 18:07:05,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:05,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:07:05,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:07:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:07:05,779 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:05,864 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2024-11-09 18:07:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:07:05,864 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-09 18:07:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:05,865 INFO L225 Difference]: With dead ends: 94 [2024-11-09 18:07:05,865 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 18:07:05,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-09 18:07:05,866 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:05,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 76 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 18:07:05,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 43. [2024-11-09 18:07:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-11-09 18:07:05,873 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 30 [2024-11-09 18:07:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:05,873 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-11-09 18:07:05,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-11-09 18:07:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 18:07:05,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:05,874 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:05,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:07:06,074 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 [2024-11-09 18:07:06,075 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:06,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1078348647, now seen corresponding path program 3 times [2024-11-09 18:07:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:06,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098764453] [2024-11-09 18:07:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:06,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 18:07:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098764453] [2024-11-09 18:07:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098764453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618882792] [2024-11-09 18:07:06,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:07:06,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:06,318 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) [2024-11-09 18:07:06,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:07:06,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:07:06,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:06,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 18:07:06,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:06,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:07:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:06,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-09 18:07:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:07:06,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:07,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2024-11-09 18:07:07,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2024-11-09 18:07:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:07:07,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618882792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:07,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:07,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-11-09 18:07:07,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91286758] [2024-11-09 18:07:07,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:07,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 18:07:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:07,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 18:07:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:07:07,277 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:07,817 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2024-11-09 18:07:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 18:07:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-09 18:07:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:07,819 INFO L225 Difference]: With dead ends: 82 [2024-11-09 18:07:07,819 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 18:07:07,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=433, Invalid=1729, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 18:07:07,820 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:07,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 223 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:07:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 18:07:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 35. [2024-11-09 18:07:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-11-09 18:07:07,830 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2024-11-09 18:07:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:07,831 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-11-09 18:07:07,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-11-09 18:07:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 18:07:07,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:07,832 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:07,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:07:08,032 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 [2024-11-09 18:07:08,032 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:08,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash -497194690, now seen corresponding path program 4 times [2024-11-09 18:07:08,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:08,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984052336] [2024-11-09 18:07:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:07:08,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984052336] [2024-11-09 18:07:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984052336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528232266] [2024-11-09 18:07:08,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:07:08,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:08,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:08,242 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) [2024-11-09 18:07:08,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:07:08,311 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:07:08,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:08,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 18:07:08,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:08,405 INFO L349 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2024-11-09 18:07:08,405 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 1 case distinctions, treesize of input 36 treesize of output 37 [2024-11-09 18:07:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:07:08,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:08,927 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2024-11-09 18:07:08,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 36 [2024-11-09 18:07:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:07:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528232266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:09,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-11-09 18:07:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152089835] [2024-11-09 18:07:09,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:09,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 18:07:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 18:07:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2024-11-09 18:07:09,093 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:09,991 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2024-11-09 18:07:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 18:07:09,992 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-09 18:07:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:09,993 INFO L225 Difference]: With dead ends: 131 [2024-11-09 18:07:09,993 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 18:07:09,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=641, Invalid=2439, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:07:09,994 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 229 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:09,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 334 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:07:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 18:07:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 62. [2024-11-09 18:07:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2024-11-09 18:07:10,007 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 34 [2024-11-09 18:07:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:10,008 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2024-11-09 18:07:10,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2024-11-09 18:07:10,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 18:07:10,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:10,009 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:10,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:07:10,209 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 [2024-11-09 18:07:10,210 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:10,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1246671962, now seen corresponding path program 5 times [2024-11-09 18:07:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846711691] [2024-11-09 18:07:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846711691] [2024-11-09 18:07:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846711691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160976959] [2024-11-09 18:07:11,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:07:11,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:11,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:11,190 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) [2024-11-09 18:07:11,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:07:11,283 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-09 18:07:11,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:11,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 18:07:11,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:11,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:07:11,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:11,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-09 18:07:11,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:11,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:11,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:11,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:11,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:11,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 79 [2024-11-09 18:07:12,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:12,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:12,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:12,123 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 18:07:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:12,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:12,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 105 treesize of output 70 [2024-11-09 18:07:12,131 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 18:07:12,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:12,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 20 [2024-11-09 18:07:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:12,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:12,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 91 [2024-11-09 18:07:12,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61718 treesize of output 61206 [2024-11-09 18:07:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160976959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:12,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:12,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 40 [2024-11-09 18:07:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616794078] [2024-11-09 18:07:12,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:12,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 18:07:12,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 18:07:12,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1277, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:07:12,717 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 40 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:13,589 INFO L93 Difference]: Finished difference Result 207 states and 220 transitions. [2024-11-09 18:07:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 18:07:13,589 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-09 18:07:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:13,590 INFO L225 Difference]: With dead ends: 207 [2024-11-09 18:07:13,591 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 18:07:13,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=703, Invalid=2603, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 18:07:13,592 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 262 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:13,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 381 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:07:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 18:07:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 96. [2024-11-09 18:07:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0947368421052632) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-09 18:07:13,609 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 40 [2024-11-09 18:07:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:13,609 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-09 18:07:13,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.575) internal successors, (103), 40 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-09 18:07:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 18:07:13,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:13,610 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:13,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:13,811 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 [2024-11-09 18:07:13,811 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:13,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -320106882, now seen corresponding path program 6 times [2024-11-09 18:07:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:13,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417800918] [2024-11-09 18:07:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:07:14,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:14,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417800918] [2024-11-09 18:07:14,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417800918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:14,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410701867] [2024-11-09 18:07:14,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:07:14,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:14,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:14,077 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) [2024-11-09 18:07:14,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:07:14,208 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 18:07:14,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:14,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:07:14,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:07:14,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 18:07:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410701867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:14,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:14,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2024-11-09 18:07:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302554838] [2024-11-09 18:07:14,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:14,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 18:07:14,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 18:07:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 18:07:14,775 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:15,082 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2024-11-09 18:07:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 18:07:15,082 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-09 18:07:15,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:15,083 INFO L225 Difference]: With dead ends: 199 [2024-11-09 18:07:15,083 INFO L226 Difference]: Without dead ends: 148 [2024-11-09 18:07:15,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=458, Invalid=1434, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 18:07:15,084 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 116 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:15,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 293 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:07:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-09 18:07:15,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 81. [2024-11-09 18:07:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.1) internal successors, (88), 80 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2024-11-09 18:07:15,099 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 42 [2024-11-09 18:07:15,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:15,099 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2024-11-09 18:07:15,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.3333333333333335) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2024-11-09 18:07:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 18:07:15,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:15,100 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:15,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:15,304 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 [2024-11-09 18:07:15,305 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:15,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:15,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1520740392, now seen corresponding path program 7 times [2024-11-09 18:07:15,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:15,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046628087] [2024-11-09 18:07:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:15,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:07:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046628087] [2024-11-09 18:07:15,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046628087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416961816] [2024-11-09 18:07:15,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:07:15,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:15,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:15,542 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) [2024-11-09 18:07:15,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:07:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:15,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 18:07:15,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:07:15,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 18:07:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416961816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:16,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:16,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-11-09 18:07:16,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176744250] [2024-11-09 18:07:16,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:16,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 18:07:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:16,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 18:07:16,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 18:07:16,171 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:16,356 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2024-11-09 18:07:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 18:07:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-09 18:07:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:16,357 INFO L225 Difference]: With dead ends: 115 [2024-11-09 18:07:16,357 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 18:07:16,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1134, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 18:07:16,359 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 198 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:16,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 200 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:07:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 18:07:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 65. [2024-11-09 18:07:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2024-11-09 18:07:16,369 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 44 [2024-11-09 18:07:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:16,370 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2024-11-09 18:07:16,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2024-11-09 18:07:16,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 18:07:16,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:16,371 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:16,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:16,574 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 [2024-11-09 18:07:16,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:16,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:16,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1812341273, now seen corresponding path program 8 times [2024-11-09 18:07:16,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:16,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266503400] [2024-11-09 18:07:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:16,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266503400] [2024-11-09 18:07:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266503400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549242815] [2024-11-09 18:07:17,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:07:17,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:17,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:17,383 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) [2024-11-09 18:07:17,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:07:17,469 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:07:17,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:17,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 18:07:17,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:17,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:07:17,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:07:17,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:07:17,784 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 26 treesize of output 27 [2024-11-09 18:07:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:18,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:18,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2024-11-09 18:07:18,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 214 [2024-11-09 18:07:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:18,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549242815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:18,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:18,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 21] total 56 [2024-11-09 18:07:18,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150079478] [2024-11-09 18:07:18,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:18,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-09 18:07:18,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-09 18:07:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=2694, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 18:07:18,701 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 56 states, 56 states have (on average 2.3035714285714284) internal successors, (129), 56 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:20,512 INFO L93 Difference]: Finished difference Result 221 states and 235 transitions. [2024-11-09 18:07:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 18:07:20,512 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.3035714285714284) internal successors, (129), 56 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-09 18:07:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:20,513 INFO L225 Difference]: With dead ends: 221 [2024-11-09 18:07:20,513 INFO L226 Difference]: Without dead ends: 218 [2024-11-09 18:07:20,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2177 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1628, Invalid=7684, Unknown=0, NotChecked=0, Total=9312 [2024-11-09 18:07:20,516 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 531 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:20,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 954 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:07:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-09 18:07:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 103. [2024-11-09 18:07:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 102 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2024-11-09 18:07:20,536 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 46 [2024-11-09 18:07:20,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:20,537 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2024-11-09 18:07:20,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.3035714285714284) internal successors, (129), 56 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2024-11-09 18:07:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 18:07:20,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:20,537 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:20,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:07:20,738 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 [2024-11-09 18:07:20,738 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:20,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1768177185, now seen corresponding path program 9 times [2024-11-09 18:07:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:20,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686524017] [2024-11-09 18:07:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:20,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:21,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686524017] [2024-11-09 18:07:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686524017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452686889] [2024-11-09 18:07:21,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:07:21,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:21,906 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) [2024-11-09 18:07:21,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:07:22,025 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 18:07:22,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:22,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 18:07:22,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:22,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:22,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-09 18:07:22,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:22,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:22,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:22,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:22,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:22,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 77 [2024-11-09 18:07:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:07:22,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:23,051 INFO L349 Elim1Store]: treesize reduction 70, result has 29.3 percent of original size [2024-11-09 18:07:23,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 91 treesize of output 74 [2024-11-09 18:07:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:07:23,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452686889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:23,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:23,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14, 11] total 43 [2024-11-09 18:07:23,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517518070] [2024-11-09 18:07:23,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:23,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 18:07:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 18:07:23,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1609, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 18:07:23,624 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 43 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:26,460 INFO L93 Difference]: Finished difference Result 222 states and 241 transitions. [2024-11-09 18:07:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 18:07:26,461 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-09 18:07:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:26,466 INFO L225 Difference]: With dead ends: 222 [2024-11-09 18:07:26,466 INFO L226 Difference]: Without dead ends: 187 [2024-11-09 18:07:26,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=965, Invalid=6175, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 18:07:26,469 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 300 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:26,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1456 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 18:07:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-09 18:07:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 90. [2024-11-09 18:07:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.101123595505618) internal successors, (98), 89 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2024-11-09 18:07:26,520 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 48 [2024-11-09 18:07:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:26,521 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2024-11-09 18:07:26,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2024-11-09 18:07:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 18:07:26,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:26,522 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:26,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 18:07:26,726 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 [2024-11-09 18:07:26,727 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:26,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1426368302, now seen corresponding path program 10 times [2024-11-09 18:07:26,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:26,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180537095] [2024-11-09 18:07:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:28,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:28,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180537095] [2024-11-09 18:07:28,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180537095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:28,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623059220] [2024-11-09 18:07:28,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:07:28,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:28,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:28,241 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) [2024-11-09 18:07:28,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:07:28,320 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:07:28,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:28,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 18:07:28,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:28,453 INFO L349 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2024-11-09 18:07:28,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2024-11-09 18:07:28,525 INFO L349 Elim1Store]: treesize reduction 89, result has 32.6 percent of original size [2024-11-09 18:07:28,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 73 treesize of output 79 [2024-11-09 18:07:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:07:29,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:29,617 INFO L349 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2024-11-09 18:07:29,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 63 [2024-11-09 18:07:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 18:07:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623059220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:29,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:29,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 13] total 45 [2024-11-09 18:07:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351976571] [2024-11-09 18:07:29,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:29,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-09 18:07:29,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-09 18:07:29,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 18:07:29,744 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 45 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 45 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:31,732 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2024-11-09 18:07:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-09 18:07:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 45 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-09 18:07:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:31,733 INFO L225 Difference]: With dead ends: 156 [2024-11-09 18:07:31,733 INFO L226 Difference]: Without dead ends: 148 [2024-11-09 18:07:31,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=929, Invalid=4923, Unknown=0, NotChecked=0, Total=5852 [2024-11-09 18:07:31,735 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 402 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:31,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 726 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:07:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-09 18:07:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 133. [2024-11-09 18:07:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0757575757575757) internal successors, (142), 132 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2024-11-09 18:07:31,765 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 50 [2024-11-09 18:07:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:31,766 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2024-11-09 18:07:31,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.5555555555555554) internal successors, (115), 45 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2024-11-09 18:07:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 18:07:31,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:31,767 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:31,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 18:07:31,970 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 [2024-11-09 18:07:31,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:31,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1318036888, now seen corresponding path program 11 times [2024-11-09 18:07:31,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:31,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529500644] [2024-11-09 18:07:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:32,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:32,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529500644] [2024-11-09 18:07:32,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529500644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:32,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076679734] [2024-11-09 18:07:32,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:07:32,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:32,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:32,854 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) [2024-11-09 18:07:32,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:07:33,143 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-09 18:07:33,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:33,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 18:07:33,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:33,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 18:07:33,302 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-09 18:07:33,305 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 1 case distinctions, treesize of input 30 treesize of output 31 [2024-11-09 18:07:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:07:38,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:38,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2024-11-09 18:07:38,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 214 [2024-11-09 18:07:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:07:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076679734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:38,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:38,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 12] total 43 [2024-11-09 18:07:38,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522914945] [2024-11-09 18:07:38,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:38,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 18:07:38,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 18:07:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1590, Unknown=9, NotChecked=0, Total=1806 [2024-11-09 18:07:38,924 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 43 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:40,240 INFO L93 Difference]: Finished difference Result 166 states and 179 transitions. [2024-11-09 18:07:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 18:07:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 43 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-09 18:07:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:40,242 INFO L225 Difference]: With dead ends: 166 [2024-11-09 18:07:40,242 INFO L226 Difference]: Without dead ends: 163 [2024-11-09 18:07:40,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=463, Invalid=3068, Unknown=9, NotChecked=0, Total=3540 [2024-11-09 18:07:40,244 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 169 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:40,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1166 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:07:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-09 18:07:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 96. [2024-11-09 18:07:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2024-11-09 18:07:40,297 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 52 [2024-11-09 18:07:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:40,297 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2024-11-09 18:07:40,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.7209302325581395) internal successors, (117), 43 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2024-11-09 18:07:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 18:07:40,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:40,298 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:40,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 18:07:40,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 18:07:40,499 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:40,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1788119819, now seen corresponding path program 12 times [2024-11-09 18:07:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:40,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139573771] [2024-11-09 18:07:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:41,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:41,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139573771] [2024-11-09 18:07:41,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139573771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126074798] [2024-11-09 18:07:41,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:07:41,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:41,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:41,888 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:07:41,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 18:07:42,172 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 18:07:42,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:42,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 18:07:42,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:42,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 18:07:42,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2024-11-09 18:07:42,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:42,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 51 [2024-11-09 18:07:42,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:42,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 79 [2024-11-09 18:07:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:43,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:44,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 131 [2024-11-09 18:07:44,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 999914 treesize of output 997866 [2024-11-09 18:07:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 6 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126074798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:44,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 59 [2024-11-09 18:07:44,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654275615] [2024-11-09 18:07:44,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:44,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-09 18:07:44,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:44,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-09 18:07:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=578, Invalid=2844, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:07:44,901 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 59 states, 59 states have (on average 2.5254237288135593) internal successors, (149), 59 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:46,609 INFO L93 Difference]: Finished difference Result 156 states and 161 transitions. [2024-11-09 18:07:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 18:07:46,610 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.5254237288135593) internal successors, (149), 59 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-09 18:07:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:46,610 INFO L225 Difference]: With dead ends: 156 [2024-11-09 18:07:46,610 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 18:07:46,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1331, Invalid=5311, Unknown=0, NotChecked=0, Total=6642 [2024-11-09 18:07:46,612 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 276 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:46,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 677 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:07:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 18:07:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 81. [2024-11-09 18:07:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2024-11-09 18:07:46,641 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 54 [2024-11-09 18:07:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:46,641 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2024-11-09 18:07:46,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.5254237288135593) internal successors, (149), 59 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2024-11-09 18:07:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 18:07:46,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:46,642 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:46,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:46,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:46,843 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:46,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -688726441, now seen corresponding path program 13 times [2024-11-09 18:07:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:46,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206248980] [2024-11-09 18:07:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 56 proven. 54 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:07:47,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:47,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206248980] [2024-11-09 18:07:47,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206248980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:47,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388350187] [2024-11-09 18:07:47,312 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:07:47,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:47,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:47,314 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:07:47,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 18:07:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:47,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 18:07:47,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 72 proven. 38 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:07:47,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 90 proven. 20 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:07:48,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388350187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:48,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:48,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2024-11-09 18:07:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382304284] [2024-11-09 18:07:48,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:48,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 18:07:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:48,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 18:07:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=1811, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 18:07:48,374 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:48,949 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2024-11-09 18:07:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 18:07:48,950 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-09 18:07:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:48,951 INFO L225 Difference]: With dead ends: 189 [2024-11-09 18:07:48,951 INFO L226 Difference]: Without dead ends: 162 [2024-11-09 18:07:48,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=824, Invalid=2598, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:07:48,954 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 241 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:48,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 737 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:07:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-09 18:07:48,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 83. [2024-11-09 18:07:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2024-11-09 18:07:48,989 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 62 [2024-11-09 18:07:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:48,989 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2024-11-09 18:07:48,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2024-11-09 18:07:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 18:07:48,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:48,990 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:49,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 18:07:49,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:07:49,195 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:49,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash -902116803, now seen corresponding path program 14 times [2024-11-09 18:07:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:49,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623861394] [2024-11-09 18:07:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:50,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:50,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623861394] [2024-11-09 18:07:50,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623861394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:50,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60551815] [2024-11-09 18:07:50,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:07:50,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:50,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:50,864 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:07:50,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 18:07:51,010 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:07:51,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:51,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-09 18:07:51,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:51,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-09 18:07:51,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:51,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 67 [2024-11-09 18:07:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:51,672 INFO L349 Elim1Store]: treesize reduction 106, result has 25.9 percent of original size [2024-11-09 18:07:51,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 113 [2024-11-09 18:07:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,142 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 18:07:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:53,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 18:07:53,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 133 treesize of output 87 [2024-11-09 18:07:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:53,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:07:54,122 INFO L349 Elim1Store]: treesize reduction 30, result has 84.6 percent of original size [2024-11-09 18:07:54,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 131 treesize of output 229 [2024-11-09 18:07:54,385 INFO L349 Elim1Store]: treesize reduction 35, result has 82.1 percent of original size [2024-11-09 18:07:54,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 131 treesize of output 224 [2024-11-09 18:07:54,545 INFO L349 Elim1Store]: treesize reduction 170, result has 12.8 percent of original size [2024-11-09 18:07:54,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 131 treesize of output 89 [2024-11-09 18:07:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 72 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:07:55,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60551815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:07:55,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:07:55,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 74 [2024-11-09 18:07:55,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511239090] [2024-11-09 18:07:55,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:07:55,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-09 18:07:55,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:07:55,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-09 18:07:55,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=4801, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 18:07:55,604 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 74 states, 74 states have (on average 2.445945945945946) internal successors, (181), 74 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:07:58,495 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2024-11-09 18:07:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 18:07:58,495 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.445945945945946) internal successors, (181), 74 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-09 18:07:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:07:58,496 INFO L225 Difference]: With dead ends: 167 [2024-11-09 18:07:58,496 INFO L226 Difference]: Without dead ends: 164 [2024-11-09 18:07:58,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2627 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1703, Invalid=9639, Unknown=0, NotChecked=0, Total=11342 [2024-11-09 18:07:58,498 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 462 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:07:58,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1090 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:07:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-09 18:07:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 110. [2024-11-09 18:07:58,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.055045871559633) internal successors, (115), 109 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:58,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2024-11-09 18:07:58,539 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 64 [2024-11-09 18:07:58,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:07:58,539 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2024-11-09 18:07:58,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.445945945945946) internal successors, (181), 74 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:07:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2024-11-09 18:07:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 18:07:58,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:07:58,541 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:07:58,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 18:07:58,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:58,745 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:07:58,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:07:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1433821398, now seen corresponding path program 15 times [2024-11-09 18:07:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:07:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427733814] [2024-11-09 18:07:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:07:58,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:07:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:07:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 22 proven. 98 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:07:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:07:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427733814] [2024-11-09 18:07:59,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427733814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:07:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646823411] [2024-11-09 18:07:59,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:07:59,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:07:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:07:59,150 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:07:59,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 18:07:59,409 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 18:07:59,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:07:59,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 18:07:59,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:07:59,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 18:07:59,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2024-11-09 18:08:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:08:00,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:08:00,490 INFO L349 Elim1Store]: treesize reduction 10, result has 67.7 percent of original size [2024-11-09 18:08:00,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 48 [2024-11-09 18:08:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 18:08:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646823411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:08:01,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:08:01,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 52 [2024-11-09 18:08:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926327624] [2024-11-09 18:08:01,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:08:01,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-09 18:08:01,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:08:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-09 18:08:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=2352, Unknown=0, NotChecked=0, Total=2652 [2024-11-09 18:08:01,015 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:08:03,297 INFO L93 Difference]: Finished difference Result 351 states and 366 transitions. [2024-11-09 18:08:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-09 18:08:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-09 18:08:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:08:03,299 INFO L225 Difference]: With dead ends: 351 [2024-11-09 18:08:03,299 INFO L226 Difference]: Without dead ends: 275 [2024-11-09 18:08:03,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2963 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1744, Invalid=9386, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 18:08:03,301 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 1156 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:08:03,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 791 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:08:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-09 18:08:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 116. [2024-11-09 18:08:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0608695652173914) internal successors, (122), 115 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2024-11-09 18:08:03,345 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 64 [2024-11-09 18:08:03,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:08:03,345 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2024-11-09 18:08:03,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2024-11-09 18:08:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 18:08:03,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:08:03,346 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:08:03,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 18:08:03,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:03,548 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:08:03,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:08:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1839954052, now seen corresponding path program 16 times [2024-11-09 18:08:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:08:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956755079] [2024-11-09 18:08:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:08:03,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:08:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:08:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:08:05,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:08:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956755079] [2024-11-09 18:08:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956755079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:08:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825547446] [2024-11-09 18:08:05,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:08:05,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:05,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:08:05,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:08:05,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 18:08:05,425 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:08:05,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:08:05,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 18:08:05,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:08:05,539 INFO L349 Elim1Store]: treesize reduction 41, result has 37.9 percent of original size [2024-11-09 18:08:05,539 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 1 case distinctions, treesize of input 46 treesize of output 47 [2024-11-09 18:08:05,612 INFO L349 Elim1Store]: treesize reduction 133, result has 28.5 percent of original size [2024-11-09 18:08:05,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 101 [2024-11-09 18:08:05,729 INFO L349 Elim1Store]: treesize reduction 250, result has 24.2 percent of original size [2024-11-09 18:08:05,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 143 treesize of output 155 [2024-11-09 18:08:05,901 INFO L349 Elim1Store]: treesize reduction 382, result has 22.0 percent of original size [2024-11-09 18:08:05,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 189 treesize of output 207 [2024-11-09 18:08:08,329 INFO L349 Elim1Store]: treesize reduction 165, result has 1.8 percent of original size [2024-11-09 18:08:08,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 237 treesize of output 142 [2024-11-09 18:08:08,338 INFO L349 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2024-11-09 18:08:08,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 20 [2024-11-09 18:08:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 98 proven. 27 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:08:08,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:08:09,638 INFO L349 Elim1Store]: treesize reduction 40, result has 85.5 percent of original size [2024-11-09 18:08:09,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 179 treesize of output 322 [2024-11-09 18:08:09,690 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-09 18:08:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 24 proven. 101 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 18:08:09,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825547446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:08:09,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:08:09,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19, 17] total 59 [2024-11-09 18:08:09,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592865097] [2024-11-09 18:08:09,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:08:09,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-09 18:08:09,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:08:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-09 18:08:09,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=3051, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 18:08:09,800 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand has 59 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 59 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:14,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 18:08:19,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 18:08:21,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 18:08:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:08:22,311 INFO L93 Difference]: Finished difference Result 194 states and 203 transitions. [2024-11-09 18:08:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-09 18:08:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 59 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 18:08:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:08:22,312 INFO L225 Difference]: With dead ends: 194 [2024-11-09 18:08:22,312 INFO L226 Difference]: Without dead ends: 110 [2024-11-09 18:08:22,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2163 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1779, Invalid=8321, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 18:08:22,317 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 351 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 116 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:08:22,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 939 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1425 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2024-11-09 18:08:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-09 18:08:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2024-11-09 18:08:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0566037735849056) internal successors, (112), 106 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2024-11-09 18:08:22,359 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 68 [2024-11-09 18:08:22,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:08:22,359 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2024-11-09 18:08:22,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.7288135593220337) internal successors, (161), 59 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2024-11-09 18:08:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 18:08:22,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:08:22,360 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 8, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:08:22,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 18:08:22,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:22,561 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:08:22,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:08:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash 884799349, now seen corresponding path program 17 times [2024-11-09 18:08:22,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:08:22,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033827528] [2024-11-09 18:08:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:08:22,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:08:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:08:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 44 proven. 122 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:08:23,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:08:23,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033827528] [2024-11-09 18:08:23,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033827528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:08:23,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967654098] [2024-11-09 18:08:23,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:08:23,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:23,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:08:23,040 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:08:23,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 18:08:25,358 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-09 18:08:25,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:08:25,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 18:08:25,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:08:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 56 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:08:25,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:08:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 56 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 18:08:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967654098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:08:26,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:08:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 60 [2024-11-09 18:08:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634533047] [2024-11-09 18:08:26,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:08:26,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-09 18:08:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:08:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-09 18:08:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=712, Invalid=2828, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 18:08:26,388 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 60 states, 60 states have (on average 2.2) internal successors, (132), 60 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:08:26,912 INFO L93 Difference]: Finished difference Result 241 states and 253 transitions. [2024-11-09 18:08:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-09 18:08:26,913 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.2) internal successors, (132), 60 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-09 18:08:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:08:26,913 INFO L225 Difference]: With dead ends: 241 [2024-11-09 18:08:26,913 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 18:08:26,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1249, Invalid=4301, Unknown=0, NotChecked=0, Total=5550 [2024-11-09 18:08:26,918 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 165 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:08:26,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 273 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:08:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 18:08:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 115. [2024-11-09 18:08:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0526315789473684) internal successors, (120), 114 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2024-11-09 18:08:26,966 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 70 [2024-11-09 18:08:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:08:26,966 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2024-11-09 18:08:26,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.2) internal successors, (132), 60 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:08:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2024-11-09 18:08:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 18:08:26,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:08:26,967 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 8, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:08:26,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 18:08:27,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:08:27,172 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:08:27,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:08:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash -70598535, now seen corresponding path program 18 times [2024-11-09 18:08:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:08:27,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221932157] [2024-11-09 18:08:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:08:27,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:08:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat