./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s3lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/s3lif.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 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:56:40,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:56:40,117 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:56:40,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:56:40,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:56:40,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:56:40,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:56:40,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:56:40,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:56:40,147 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:56:40,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:56:40,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:56:40,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:56:40,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:56:40,148 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:56:40,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:56:40,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:56:40,148 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:56:40,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:56:40,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:56:40,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:56:40,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:56:40,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:56:40,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:56:40,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:56:40,151 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:56:40,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:56:40,151 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:56:40,151 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:56:40,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:56:40,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:56:40,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:56:40,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:56:40,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:56:40,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:56:40,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:56:40,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:56:40,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:56:40,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:56:40,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:56:40,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:56:40,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:56:40,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a [2024-11-11 15:56:40,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:56:40,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:56:40,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:56:40,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:56:40,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:56:40,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s3lif.c [2024-11-11 15:56:41,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:56:41,772 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:56:41,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3lif.c [2024-11-11 15:56:41,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dc7da86/76b15f2741d045afa7314a2bc49bdcf7/FLAG3cc74e012 [2024-11-11 15:56:42,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dc7da86/76b15f2741d045afa7314a2bc49bdcf7 [2024-11-11 15:56:42,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:56:42,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:56:42,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:56:42,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:56:42,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:56:42,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@167d67a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42, skipping insertion in model container [2024-11-11 15:56:42,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,214 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:56:42,359 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2024-11-11 15:56:42,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:56:42,408 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:56:42,418 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2024-11-11 15:56:42,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:56:42,444 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:56:42,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42 WrapperNode [2024-11-11 15:56:42,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:56:42,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:56:42,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:56:42,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:56:42,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,479 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2024-11-11 15:56:42,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:56:42,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:56:42,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:56:42,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:56:42,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,495 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,504 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 4, 7]. 38 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 5 writes are split as follows [0, 0, 2, 3]. [2024-11-11 15:56:42,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:56:42,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:56:42,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:56:42,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:56:42,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (1/1) ... [2024-11-11 15:56:42,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:56:42,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:42,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 15:56:42,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 15:56:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:56:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:56:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:56:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:56:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 15:56:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:56:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:56:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:56:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:56:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-11 15:56:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-11 15:56:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:56:42,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:56:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:56:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:56:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:56:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-11 15:56:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:56:42,648 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:56:42,649 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:56:42,744 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-11 15:56:42,744 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:56:42,752 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:56:42,752 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 15:56:42,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:56:42 BoogieIcfgContainer [2024-11-11 15:56:42,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:56:42,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:56:42,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:56:42,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:56:42,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:56:42" (1/3) ... [2024-11-11 15:56:42,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572b6c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:56:42, skipping insertion in model container [2024-11-11 15:56:42,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:56:42" (2/3) ... [2024-11-11 15:56:42,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572b6c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:56:42, skipping insertion in model container [2024-11-11 15:56:42,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:56:42" (3/3) ... [2024-11-11 15:56:42,758 INFO L112 eAbstractionObserver]: Analyzing ICFG s3lif.c [2024-11-11 15:56:42,770 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:56:42,770 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:56:42,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:56:42,813 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;@4e74f136, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:56:42,814 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:56:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:42,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 15:56:42,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:42,822 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:42,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:42,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2024-11-11 15:56:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315678771] [2024-11-11 15:56:42,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:42,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:42,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315678771] [2024-11-11 15:56:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315678771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:56:42,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:56:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 15:56:42,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863161317] [2024-11-11 15:56:42,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:56:42,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 15:56:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:42,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 15:56:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 15:56:42,979 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-11-11 15:56:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:42,989 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2024-11-11 15:56:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 15:56:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2024-11-11 15:56:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:42,995 INFO L225 Difference]: With dead ends: 40 [2024-11-11 15:56:42,995 INFO L226 Difference]: Without dead ends: 18 [2024-11-11 15:56:42,997 INFO L434 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 [2024-11-11 15:56:43,001 INFO L435 NwaCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:43,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:56:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-11 15:56:43,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-11 15:56:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-11-11 15:56:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-11 15:56:43,025 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2024-11-11 15:56:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:43,026 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-11 15:56:43,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-11-11 15:56:43,026 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-11 15:56:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 15:56:43,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:43,027 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:43,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:56:43,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:43,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2024-11-11 15:56:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:43,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823220887] [2024-11-11 15:56:43,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:43,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:43,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823220887] [2024-11-11 15:56:43,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823220887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:56:43,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:56:43,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:56:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273987509] [2024-11-11 15:56:43,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:56:43,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:56:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:56:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:56:43,168 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-11 15:56:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:43,226 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-11-11 15:56:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:56:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-11 15:56:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:43,228 INFO L225 Difference]: With dead ends: 36 [2024-11-11 15:56:43,228 INFO L226 Difference]: Without dead ends: 25 [2024-11-11 15:56:43,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:56:43,230 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:43,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-11 15:56:43,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2024-11-11 15:56:43,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 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) [2024-11-11 15:56:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-11 15:56:43,239 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2024-11-11 15:56:43,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:43,239 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-11 15:56:43,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-11 15:56:43,239 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-11 15:56:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-11 15:56:43,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:43,240 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:43,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 15:56:43,242 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:43,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2024-11-11 15:56:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:43,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728350732] [2024-11-11 15:56:43,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:43,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728350732] [2024-11-11 15:56:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728350732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018480075] [2024-11-11 15:56:44,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:44,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:44,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:44,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:44,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:56:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:44,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-11 15:56:44,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:44,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:44,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:44,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:44,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:44,531 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 35 treesize of output 31 [2024-11-11 15:56:44,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:44,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2024-11-11 15:56:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:44,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018480075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:44,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:44,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2024-11-11 15:56:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82948908] [2024-11-11 15:56:44,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:44,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-11 15:56:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-11 15:56:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2024-11-11 15:56:44,676 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:45,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:45,007 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2024-11-11 15:56:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 15:56:45,007 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-11 15:56:45,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:45,009 INFO L225 Difference]: With dead ends: 46 [2024-11-11 15:56:45,009 INFO L226 Difference]: Without dead ends: 42 [2024-11-11 15:56:45,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2024-11-11 15:56:45,010 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:45,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 57 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:56:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-11 15:56:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2024-11-11 15:56:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 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) [2024-11-11 15:56:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-11 15:56:45,015 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 20 [2024-11-11 15:56:45,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:45,015 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-11 15:56:45,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-11 15:56:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-11 15:56:45,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:45,016 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:45,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:56:45,217 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 [2024-11-11 15:56:45,217 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:45,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1608161903, now seen corresponding path program 1 times [2024-11-11 15:56:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801886324] [2024-11-11 15:56:45,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:56:45,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801886324] [2024-11-11 15:56:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801886324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600435242] [2024-11-11 15:56:45,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:45,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:45,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:45,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:45,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:56:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:45,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-11 15:56:45,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:45,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:56:45,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:45,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-11 15:56:45,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-11 15:56:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:56:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600435242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:45,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:45,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-11 15:56:45,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524542166] [2024-11-11 15:56:45,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:45,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-11 15:56:45,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-11 15:56:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-11 15:56:45,468 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:45,541 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-11 15:56:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 15:56:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-11 15:56:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:45,542 INFO L225 Difference]: With dead ends: 48 [2024-11-11 15:56:45,542 INFO L226 Difference]: Without dead ends: 37 [2024-11-11 15:56:45,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:56:45,543 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:45,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:56:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-11 15:56:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2024-11-11 15:56:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-11 15:56:45,547 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 20 [2024-11-11 15:56:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:45,548 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-11 15:56:45,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-11 15:56:45,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 15:56:45,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:45,549 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:45,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 15:56:45,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-11 15:56:45,750 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:45,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash -949569453, now seen corresponding path program 2 times [2024-11-11 15:56:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:45,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965315089] [2024-11-11 15:56:45,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:56:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965315089] [2024-11-11 15:56:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965315089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874847631] [2024-11-11 15:56:45,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:56:45,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:45,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:45,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:56:45,867 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:56:45,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:45,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:56:45,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:56:45,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:56:45,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874847631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:45,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:45,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-11 15:56:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574752265] [2024-11-11 15:56:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:45,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 15:56:45,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 15:56:45,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-11 15:56:45,934 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-11-11 15:56:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:46,006 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-11-11 15:56:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 15:56:46,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 [2024-11-11 15:56:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:46,006 INFO L225 Difference]: With dead ends: 66 [2024-11-11 15:56:46,006 INFO L226 Difference]: Without dead ends: 40 [2024-11-11 15:56:46,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:56:46,007 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:46,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-11 15:56:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2024-11-11 15:56:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2024-11-11 15:56:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-11 15:56:46,012 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2024-11-11 15:56:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:46,012 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-11 15:56:46,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-11-11 15:56:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-11 15:56:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 15:56:46,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:46,013 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:46,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:56:46,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:46,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:46,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2105967953, now seen corresponding path program 3 times [2024-11-11 15:56:46,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:46,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640738966] [2024-11-11 15:56:46,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:46,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:56:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640738966] [2024-11-11 15:56:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640738966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:46,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055739559] [2024-11-11 15:56:46,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:56:46,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:46,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:46,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:46,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:56:46,340 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-11 15:56:46,340 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:46,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-11 15:56:46,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:46,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:46,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:46,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:56:46,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:46,830 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 35 treesize of output 31 [2024-11-11 15:56:46,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:46,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2024-11-11 15:56:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:56:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055739559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:46,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:46,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 29 [2024-11-11 15:56:46,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872929444] [2024-11-11 15:56:46,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:46,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-11 15:56:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-11 15:56:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2024-11-11 15:56:46,953 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 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) [2024-11-11 15:56:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:47,375 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-11 15:56:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-11 15:56:47,375 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 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 [2024-11-11 15:56:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:47,377 INFO L225 Difference]: With dead ends: 36 [2024-11-11 15:56:47,377 INFO L226 Difference]: Without dead ends: 28 [2024-11-11 15:56:47,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2024-11-11 15:56:47,379 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:47,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 44 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:47,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-11 15:56:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-11 15:56:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-11 15:56:47,385 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2024-11-11 15:56:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:47,385 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-11 15:56:47,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 29 states have internal predecessors, (56), 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) [2024-11-11 15:56:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-11 15:56:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-11 15:56:47,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:47,387 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:47,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 15:56:47,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:47,595 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:47,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1032594067, now seen corresponding path program 4 times [2024-11-11 15:56:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929925648] [2024-11-11 15:56:47,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:47,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:48,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:48,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929925648] [2024-11-11 15:56:48,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929925648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:48,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109567038] [2024-11-11 15:56:48,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:56:48,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:48,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:48,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:48,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:56:48,553 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:56:48,553 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:48,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-11 15:56:48,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:48,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:48,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:48,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:48,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:56:48,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:49,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:49,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:49,342 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 78 treesize of output 70 [2024-11-11 15:56:49,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:49,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 386 treesize of output 383 [2024-11-11 15:56:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:49,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109567038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:49,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:49,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 47 [2024-11-11 15:56:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109312967] [2024-11-11 15:56:49,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:49,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-11 15:56:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-11 15:56:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1854, Unknown=0, NotChecked=0, Total=2162 [2024-11-11 15:56:49,616 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:50,789 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2024-11-11 15:56:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-11 15:56:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-11 15:56:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:50,790 INFO L225 Difference]: With dead ends: 85 [2024-11-11 15:56:50,790 INFO L226 Difference]: Without dead ends: 70 [2024-11-11 15:56:50,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=741, Invalid=4089, Unknown=0, NotChecked=0, Total=4830 [2024-11-11 15:56:50,792 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 63 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:50,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 90 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 15:56:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-11 15:56:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2024-11-11 15:56:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 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) [2024-11-11 15:56:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-11 15:56:50,799 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27 [2024-11-11 15:56:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:50,799 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-11 15:56:50,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-11 15:56:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-11 15:56:50,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:50,801 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:50,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 15:56:51,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:51,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:51,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash -774428629, now seen corresponding path program 1 times [2024-11-11 15:56:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:51,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942415095] [2024-11-11 15:56:51,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:56:51,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942415095] [2024-11-11 15:56:51,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942415095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084953344] [2024-11-11 15:56:51,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:51,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:51,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:51,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:51,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 15:56:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:51,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-11 15:56:51,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:51,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:51,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:51,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-11 15:56:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:56:51,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:51,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-11 15:56:51,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-11 15:56:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:56:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084953344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:51,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:51,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-11 15:56:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719268420] [2024-11-11 15:56:51,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:51,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:56:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:56:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:56:51,325 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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) [2024-11-11 15:56:51,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:51,426 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2024-11-11 15:56:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 15:56:51,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 27 [2024-11-11 15:56:51,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:51,427 INFO L225 Difference]: With dead ends: 80 [2024-11-11 15:56:51,427 INFO L226 Difference]: Without dead ends: 55 [2024-11-11 15:56:51,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-11 15:56:51,427 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:51,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 77 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-11 15:56:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-11-11 15:56:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 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) [2024-11-11 15:56:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2024-11-11 15:56:51,435 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 27 [2024-11-11 15:56:51,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:51,435 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2024-11-11 15:56:51,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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) [2024-11-11 15:56:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2024-11-11 15:56:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:56:51,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:51,435 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:51,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-11 15:56:51,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:51,636 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:51,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:51,637 INFO L85 PathProgramCache]: Analyzing trace with hash -132219249, now seen corresponding path program 5 times [2024-11-11 15:56:51,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:51,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044129178] [2024-11-11 15:56:51,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:51,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:56:51,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:51,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044129178] [2024-11-11 15:56:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044129178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:51,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947526221] [2024-11-11 15:56:51,709 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:56:51,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:51,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:51,711 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:51,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 15:56:51,776 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-11 15:56:51,776 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:51,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:56:51,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:56:51,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:56:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947526221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:51,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-11 15:56:51,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206668615] [2024-11-11 15:56:51,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:51,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:56:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:56:51,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:56:51,870 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:51,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:51,952 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2024-11-11 15:56:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 15:56:51,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-11 15:56:51,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:51,953 INFO L225 Difference]: With dead ends: 85 [2024-11-11 15:56:51,953 INFO L226 Difference]: Without dead ends: 49 [2024-11-11 15:56:51,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-11 15:56:51,954 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:51,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 37 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-11 15:56:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2024-11-11 15:56:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-11 15:56:51,959 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 29 [2024-11-11 15:56:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:51,959 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-11 15:56:51,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-11 15:56:51,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:56:51,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:51,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:51,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-11 15:56:52,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:52,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:52,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1292373713, now seen corresponding path program 6 times [2024-11-11 15:56:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:52,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781091669] [2024-11-11 15:56:52,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:52,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:56:52,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:52,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781091669] [2024-11-11 15:56:52,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781091669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558011071] [2024-11-11 15:56:52,252 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:56:52,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:52,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:52,253 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:52,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 15:56:52,322 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-11 15:56:52,322 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:52,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-11 15:56:52,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:56:52,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:56:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558011071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:52,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:52,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-11 15:56:52,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088178837] [2024-11-11 15:56:52,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:52,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:56:52,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:52,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:56:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:56:52,431 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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) [2024-11-11 15:56:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:52,533 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-11-11 15:56:52,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 15:56:52,533 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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) Word has length 29 [2024-11-11 15:56:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:52,534 INFO L225 Difference]: With dead ends: 48 [2024-11-11 15:56:52,534 INFO L226 Difference]: Without dead ends: 38 [2024-11-11 15:56:52,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:56:52,535 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 40 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:52,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 26 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-11 15:56:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2024-11-11 15:56:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-11 15:56:52,541 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 29 [2024-11-11 15:56:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:52,541 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-11 15:56:52,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 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) [2024-11-11 15:56:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-11 15:56:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-11 15:56:52,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:52,542 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:52,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-11 15:56:52,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-11 15:56:52,743 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:52,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1250534543, now seen corresponding path program 7 times [2024-11-11 15:56:52,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:52,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133744063] [2024-11-11 15:56:52,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:52,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:53,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:53,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133744063] [2024-11-11 15:56:53,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133744063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:53,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289223789] [2024-11-11 15:56:53,881 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:56:53,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:53,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:53,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 15:56:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:53,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-11 15:56:53,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:53,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:54,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:54,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:54,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:56:54,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:54,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:56:54,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:54,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:54,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:54,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:55,092 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 137 treesize of output 125 [2024-11-11 15:56:55,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:55,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 11813 treesize of output 11231 [2024-11-11 15:56:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:56:55,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289223789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:55,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:55,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 65 [2024-11-11 15:56:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342171598] [2024-11-11 15:56:55,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:55,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-11 15:56:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-11 15:56:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=3629, Unknown=0, NotChecked=0, Total=4160 [2024-11-11 15:56:55,473 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 65 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 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) [2024-11-11 15:56:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:56,315 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2024-11-11 15:56:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-11 15:56:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 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 [2024-11-11 15:56:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:56,316 INFO L225 Difference]: With dead ends: 84 [2024-11-11 15:56:56,316 INFO L226 Difference]: Without dead ends: 67 [2024-11-11 15:56:56,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=749, Invalid=4951, Unknown=0, NotChecked=0, Total=5700 [2024-11-11 15:56:56,318 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 39 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:56,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 127 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 15:56:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-11 15:56:56,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2024-11-11 15:56:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 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) [2024-11-11 15:56:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-11-11 15:56:56,324 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 34 [2024-11-11 15:56:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:56,324 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-11-11 15:56:56,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 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) [2024-11-11 15:56:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-11-11 15:56:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-11 15:56:56,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:56,325 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:56,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-11 15:56:56,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:56,529 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:56,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2033315503, now seen corresponding path program 2 times [2024-11-11 15:56:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123849508] [2024-11-11 15:56:56,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:56:56,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123849508] [2024-11-11 15:56:56,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123849508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:56,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617501018] [2024-11-11 15:56:56,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:56:56,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:56,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:56,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:56,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 15:56:56,785 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:56:56,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:56,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-11 15:56:56,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:56,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:56,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:56,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-11 15:56:56,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:56,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-11 15:56:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:56:56,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:56,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-11 15:56:56,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-11 15:56:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:56:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617501018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:56,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:56,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 19 [2024-11-11 15:56:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119505694] [2024-11-11 15:56:56,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:56,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-11 15:56:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-11 15:56:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-11 15:56:56,951 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2024-11-11 15:56:57,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:57,085 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2024-11-11 15:56:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-11 15:56:57,085 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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 [2024-11-11 15:56:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:57,086 INFO L225 Difference]: With dead ends: 75 [2024-11-11 15:56:57,086 INFO L226 Difference]: Without dead ends: 60 [2024-11-11 15:56:57,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-11-11 15:56:57,088 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:57,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:57,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-11 15:56:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2024-11-11 15:56:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2024-11-11 15:56:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-11 15:56:57,099 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 34 [2024-11-11 15:56:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:57,100 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-11 15:56:57,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2024-11-11 15:56:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-11 15:56:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-11 15:56:57,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:57,101 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:57,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-11 15:56:57,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-11 15:56:57,301 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:57,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash 880380819, now seen corresponding path program 8 times [2024-11-11 15:56:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:57,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418842232] [2024-11-11 15:56:57,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:57,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:56:57,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:57,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418842232] [2024-11-11 15:56:57,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418842232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:57,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302350155] [2024-11-11 15:56:57,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:56:57,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:57,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:57,393 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:57,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 15:56:57,459 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:56:57,459 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:57,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-11 15:56:57,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:56:57,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:56:57,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302350155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:57,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:57,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-11 15:56:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710964524] [2024-11-11 15:56:57,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:57,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-11 15:56:57,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:57,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-11 15:56:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-11 15:56:57,569 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:56:57,688 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-11-11 15:56:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 15:56:57,689 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-11 15:56:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:56:57,689 INFO L225 Difference]: With dead ends: 93 [2024-11-11 15:56:57,689 INFO L226 Difference]: Without dead ends: 58 [2024-11-11 15:56:57,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:56:57,690 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:56:57,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 45 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:56:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-11 15:56:57,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2024-11-11 15:56:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 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) [2024-11-11 15:56:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-11 15:56:57,696 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 36 [2024-11-11 15:56:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:56:57,696 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-11 15:56:57,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:56:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-11 15:56:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-11 15:56:57,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:56:57,697 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:56:57,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-11 15:56:57,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-11 15:56:57,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:56:57,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:56:57,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1466624367, now seen corresponding path program 9 times [2024-11-11 15:56:57,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:56:57,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974415725] [2024-11-11 15:56:57,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:56:57,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:56:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:56:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:56:57,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:56:57,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974415725] [2024-11-11 15:56:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974415725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:56:57,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306936238] [2024-11-11 15:56:57,986 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:56:57,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:56:57,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:56:57,987 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:56:57,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 15:56:58,078 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-11 15:56:58,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:56:58,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-11 15:56:58,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:56:58,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:56:58,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:58,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:58,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:56:58,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:58,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:56:58,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:58,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:56:58,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:58,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 47 [2024-11-11 15:56:58,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-11 15:56:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:56:58,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:56:59,107 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 109 treesize of output 99 [2024-11-11 15:56:59,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:56:59,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1543 treesize of output 1529 [2024-11-11 15:56:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:56:59,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306936238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:56:59,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:56:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 22] total 51 [2024-11-11 15:56:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073074714] [2024-11-11 15:56:59,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:56:59,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-11 15:56:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:56:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-11 15:56:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=2275, Unknown=0, NotChecked=0, Total=2550 [2024-11-11 15:56:59,245 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 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) [2024-11-11 15:57:00,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:00,139 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2024-11-11 15:57:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-11 15:57:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-11 15:57:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:00,140 INFO L225 Difference]: With dead ends: 56 [2024-11-11 15:57:00,140 INFO L226 Difference]: Without dead ends: 44 [2024-11-11 15:57:00,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=644, Invalid=4758, Unknown=0, NotChecked=0, Total=5402 [2024-11-11 15:57:00,142 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 84 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:00,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 135 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 15:57:00,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-11 15:57:00,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-11 15:57:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-11-11 15:57:00,153 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 36 [2024-11-11 15:57:00,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:00,153 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-11-11 15:57:00,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.607843137254902) internal successors, (82), 51 states have internal predecessors, (82), 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) [2024-11-11 15:57:00,154 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-11-11 15:57:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-11 15:57:00,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:00,154 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:00,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-11 15:57:00,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-11 15:57:00,355 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:00,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1118330549, now seen corresponding path program 10 times [2024-11-11 15:57:00,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:00,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167507866] [2024-11-11 15:57:00,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:00,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:02,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167507866] [2024-11-11 15:57:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167507866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083899305] [2024-11-11 15:57:02,264 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:57:02,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:02,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:02,266 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:02,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-11 15:57:02,346 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:57:02,346 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:02,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-11 15:57:02,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:02,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:57:02,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:02,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:02,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:57:02,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:02,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:57:03,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:03,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-11 15:57:03,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:03,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:03,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:03,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:03,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:04,666 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 212 treesize of output 196 [2024-11-11 15:57:04,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:04,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1532848 treesize of output 1475617 [2024-11-11 15:57:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:05,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083899305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:05,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:05,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29, 29] total 85 [2024-11-11 15:57:05,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301720679] [2024-11-11 15:57:05,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:05,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-11 15:57:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-11 15:57:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=6408, Unknown=0, NotChecked=0, Total=7140 [2024-11-11 15:57:05,378 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 85 states, 85 states have (on average 1.3176470588235294) internal successors, (112), 85 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) [2024-11-11 15:57:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:10,674 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2024-11-11 15:57:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-11 15:57:10,675 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.3176470588235294) internal successors, (112), 85 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) Word has length 41 [2024-11-11 15:57:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:10,675 INFO L225 Difference]: With dead ends: 131 [2024-11-11 15:57:10,675 INFO L226 Difference]: Without dead ends: 111 [2024-11-11 15:57:10,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5819 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2254, Invalid=17768, Unknown=0, NotChecked=0, Total=20022 [2024-11-11 15:57:10,679 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 166 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:10,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 155 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 15:57:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-11 15:57:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2024-11-11 15:57:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 79 states have internal predecessors, (97), 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) [2024-11-11 15:57:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2024-11-11 15:57:10,689 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 41 [2024-11-11 15:57:10,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:10,689 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2024-11-11 15:57:10,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.3176470588235294) internal successors, (112), 85 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) [2024-11-11 15:57:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2024-11-11 15:57:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-11 15:57:10,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:10,690 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:10,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:10,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-11 15:57:10,893 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:10,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash 97262195, now seen corresponding path program 3 times [2024-11-11 15:57:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:10,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775675784] [2024-11-11 15:57:10,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:10,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:57:11,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:11,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775675784] [2024-11-11 15:57:11,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775675784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:11,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759831701] [2024-11-11 15:57:11,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:57:11,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:11,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:11,222 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:11,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-11 15:57:11,322 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-11 15:57:11,322 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:11,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-11 15:57:11,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:11,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-11 15:57:11,450 INFO L349 Elim1Store]: treesize reduction 18, result has 57.1 percent of original size [2024-11-11 15:57:11,450 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 2 case distinctions, treesize of input 29 treesize of output 36 [2024-11-11 15:57:11,537 INFO L349 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2024-11-11 15:57:11,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 55 [2024-11-11 15:57:11,675 INFO L349 Elim1Store]: treesize reduction 64, result has 50.8 percent of original size [2024-11-11 15:57:11,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 105 [2024-11-11 15:57:11,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:11,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 95 [2024-11-11 15:57:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:57:12,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:57:12,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759831701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:12,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:12,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 21] total 50 [2024-11-11 15:57:12,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945701329] [2024-11-11 15:57:12,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:12,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-11 15:57:12,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:12,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-11 15:57:12,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2024-11-11 15:57:12,624 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 50 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 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) [2024-11-11 15:57:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:13,451 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2024-11-11 15:57:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-11 15:57:13,452 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-11 15:57:13,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:13,452 INFO L225 Difference]: With dead ends: 108 [2024-11-11 15:57:13,452 INFO L226 Difference]: Without dead ends: 94 [2024-11-11 15:57:13,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=875, Invalid=4675, Unknown=0, NotChecked=0, Total=5550 [2024-11-11 15:57:13,454 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 64 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:13,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 72 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:57:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-11 15:57:13,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2024-11-11 15:57:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.188235294117647) internal successors, (101), 85 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2024-11-11 15:57:13,467 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 41 [2024-11-11 15:57:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:13,467 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2024-11-11 15:57:13,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 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) [2024-11-11 15:57:13,467 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2024-11-11 15:57:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 15:57:13,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:13,468 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:13,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:13,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:13,668 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:13,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1027067351, now seen corresponding path program 11 times [2024-11-11 15:57:13,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:13,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227313039] [2024-11-11 15:57:13,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:13,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:57:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227313039] [2024-11-11 15:57:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227313039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073925935] [2024-11-11 15:57:13,779 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:57:13,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:13,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:13,781 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:13,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-11 15:57:13,921 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-11 15:57:13,921 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:13,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:57:13,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:57:14,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:57:14,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073925935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:14,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:14,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-11 15:57:14,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150295634] [2024-11-11 15:57:14,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:14,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 15:57:14,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:14,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 15:57:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:57:14,070 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:14,195 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2024-11-11 15:57:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 15:57:14,196 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-11 15:57:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:14,196 INFO L225 Difference]: With dead ends: 138 [2024-11-11 15:57:14,196 INFO L226 Difference]: Without dead ends: 72 [2024-11-11 15:57:14,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-11 15:57:14,197 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 64 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:14,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-11 15:57:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2024-11-11 15:57:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 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) [2024-11-11 15:57:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2024-11-11 15:57:14,207 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 43 [2024-11-11 15:57:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:14,207 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2024-11-11 15:57:14,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2024-11-11 15:57:14,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-11 15:57:14,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:14,207 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:14,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-11 15:57:14,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-11 15:57:14,408 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:14,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1565898487, now seen corresponding path program 12 times [2024-11-11 15:57:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:14,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963159741] [2024-11-11 15:57:14,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:57:14,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963159741] [2024-11-11 15:57:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963159741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123500237] [2024-11-11 15:57:14,509 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:57:14,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:14,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:14,511 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) [2024-11-11 15:57:14,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-11 15:57:14,618 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-11 15:57:14,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:14,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:57:14,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:57:14,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:57:14,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123500237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:14,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:14,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-11 15:57:14,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841356711] [2024-11-11 15:57:14,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:14,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 15:57:14,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 15:57:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:57:14,780 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2024-11-11 15:57:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:14,941 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-11 15:57:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 15:57:14,941 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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 43 [2024-11-11 15:57:14,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:14,942 INFO L225 Difference]: With dead ends: 71 [2024-11-11 15:57:14,942 INFO L226 Difference]: Without dead ends: 57 [2024-11-11 15:57:14,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 69 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-11 15:57:14,942 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 67 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:14,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 37 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:14,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-11 15:57:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-11-11 15:57:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:57:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-11-11 15:57:14,950 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 43 [2024-11-11 15:57:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:14,950 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-11-11 15:57:14,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 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) [2024-11-11 15:57:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-11-11 15:57:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-11 15:57:14,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:14,951 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:14,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:15,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-11 15:57:15,154 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:15,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:15,155 INFO L85 PathProgramCache]: Analyzing trace with hash 775276721, now seen corresponding path program 13 times [2024-11-11 15:57:15,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:15,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373280047] [2024-11-11 15:57:15,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:15,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:16,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:16,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373280047] [2024-11-11 15:57:16,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373280047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:16,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824249808] [2024-11-11 15:57:16,968 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:57:16,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:16,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:16,969 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) [2024-11-11 15:57:16,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-11 15:57:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:17,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-11 15:57:17,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:17,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:57:17,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:17,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:17,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:57:17,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:17,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:57:17,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:17,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-11 15:57:17,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:17,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-11 15:57:17,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:17,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:18,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:18,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:18,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:18,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:20,018 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 303 treesize of output 283 [2024-11-11 15:57:20,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:20,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 730483639 treesize of output 711609457 [2024-11-11 15:57:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824249808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:21,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 96 [2024-11-11 15:57:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545699782] [2024-11-11 15:57:21,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:21,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-11 15:57:21,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-11 15:57:21,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=810, Invalid=8310, Unknown=0, NotChecked=0, Total=9120 [2024-11-11 15:57:21,395 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 96 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 96 states have internal predecessors, (118), 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) [2024-11-11 15:57:28,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:28,398 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2024-11-11 15:57:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-11 15:57:28,398 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 96 states have internal predecessors, (118), 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 [2024-11-11 15:57:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:28,399 INFO L225 Difference]: With dead ends: 159 [2024-11-11 15:57:28,399 INFO L226 Difference]: Without dead ends: 140 [2024-11-11 15:57:28,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5906 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2139, Invalid=18741, Unknown=0, NotChecked=0, Total=20880 [2024-11-11 15:57:28,400 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 85 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:28,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 200 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-11 15:57:28,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-11 15:57:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 95. [2024-11-11 15:57:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 94 states have internal predecessors, (114), 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) [2024-11-11 15:57:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2024-11-11 15:57:28,416 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 48 [2024-11-11 15:57:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:28,416 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2024-11-11 15:57:28,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 96 states have internal predecessors, (118), 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) [2024-11-11 15:57:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2024-11-11 15:57:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-11 15:57:28,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:28,417 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:28,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-11 15:57:28,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:28,618 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:28,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1197978547, now seen corresponding path program 4 times [2024-11-11 15:57:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:28,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442393067] [2024-11-11 15:57:28,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:28,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-11 15:57:28,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442393067] [2024-11-11 15:57:28,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442393067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909652043] [2024-11-11 15:57:28,863 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:57:28,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:28,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:28,864 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) [2024-11-11 15:57:28,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-11 15:57:28,950 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:57:28,950 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:28,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-11 15:57:28,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:28,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-11 15:57:28,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-11 15:57:29,093 INFO L349 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2024-11-11 15:57:29,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 64 [2024-11-11 15:57:29,241 INFO L349 Elim1Store]: treesize reduction 84, result has 43.2 percent of original size [2024-11-11 15:57:29,241 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 9 case distinctions, treesize of input 82 treesize of output 107 [2024-11-11 15:57:29,510 INFO L349 Elim1Store]: treesize reduction 84, result has 43.2 percent of original size [2024-11-11 15:57:29,510 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 9 case distinctions, treesize of input 155 treesize of output 153 [2024-11-11 15:57:29,905 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-11 15:57:29,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 245 treesize of output 166 [2024-11-11 15:57:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-11 15:57:30,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 28 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-11 15:57:30,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909652043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:30,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:30,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 16] total 44 [2024-11-11 15:57:30,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600352392] [2024-11-11 15:57:30,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:30,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-11 15:57:30,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-11 15:57:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1680, Unknown=0, NotChecked=0, Total=1892 [2024-11-11 15:57:30,607 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 44 states have internal predecessors, (86), 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) [2024-11-11 15:57:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:32,075 INFO L93 Difference]: Finished difference Result 136 states and 160 transitions. [2024-11-11 15:57:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-11 15:57:32,076 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 44 states have internal predecessors, (86), 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 [2024-11-11 15:57:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:32,076 INFO L225 Difference]: With dead ends: 136 [2024-11-11 15:57:32,076 INFO L226 Difference]: Without dead ends: 112 [2024-11-11 15:57:32,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=789, Invalid=5691, Unknown=0, NotChecked=0, Total=6480 [2024-11-11 15:57:32,077 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 44 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:32,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 80 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:57:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-11 15:57:32,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2024-11-11 15:57:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 97 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) [2024-11-11 15:57:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2024-11-11 15:57:32,096 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 48 [2024-11-11 15:57:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:32,096 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2024-11-11 15:57:32,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 44 states have internal predecessors, (86), 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) [2024-11-11 15:57:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2024-11-11 15:57:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-11 15:57:32,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:32,097 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:32,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-11 15:57:32,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:32,297 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:32,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2064820435, now seen corresponding path program 14 times [2024-11-11 15:57:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852834719] [2024-11-11 15:57:32,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:57:32,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852834719] [2024-11-11 15:57:32,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852834719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94802504] [2024-11-11 15:57:32,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:57:32,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:32,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:32,427 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) [2024-11-11 15:57:32,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-11 15:57:32,520 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:57:32,520 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:32,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-11 15:57:32,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:57:32,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-11 15:57:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94802504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:32,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-11 15:57:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630405016] [2024-11-11 15:57:32,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:32,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-11 15:57:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-11 15:57:32,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-11 15:57:32,734 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 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) [2024-11-11 15:57:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:32,935 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2024-11-11 15:57:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-11 15:57:32,936 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 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 [2024-11-11 15:57:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:32,936 INFO L225 Difference]: With dead ends: 168 [2024-11-11 15:57:32,936 INFO L226 Difference]: Without dead ends: 86 [2024-11-11 15:57:32,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-11 15:57:32,937 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 113 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:32,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 30 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:57:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-11 15:57:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2024-11-11 15:57:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1) internal successors, (77), 70 states have internal predecessors, (77), 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) [2024-11-11 15:57:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2024-11-11 15:57:32,955 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 50 [2024-11-11 15:57:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:32,955 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2024-11-11 15:57:32,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 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) [2024-11-11 15:57:32,955 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2024-11-11 15:57:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-11 15:57:32,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:32,955 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:32,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-11 15:57:33,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:33,157 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:33,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1449329199, now seen corresponding path program 15 times [2024-11-11 15:57:33,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:33,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469221819] [2024-11-11 15:57:33,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:33,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 15:57:33,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469221819] [2024-11-11 15:57:33,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469221819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:33,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922380762] [2024-11-11 15:57:33,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:57:33,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:33,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:33,292 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:33,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-11 15:57:33,437 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-11 15:57:33,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:33,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-11 15:57:33,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:33,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:57:33,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:33,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:33,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:57:33,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:33,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:57:33,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:33,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-11 15:57:33,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:33,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-11 15:57:34,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:34,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:34,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:34,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-11 15:57:34,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-11 15:57:34,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:34,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 76 treesize of output 114 [2024-11-11 15:57:34,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 103 [2024-11-11 15:57:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 15:57:34,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:35,947 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 205 treesize of output 189 [2024-11-11 15:57:36,036 INFO L349 Elim1Store]: treesize reduction 10, result has 92.8 percent of original size [2024-11-11 15:57:36,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 376439 treesize of output 370389 [2024-11-11 15:57:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 15:57:36,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922380762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:36,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:36,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 32, 32] total 75 [2024-11-11 15:57:36,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39541593] [2024-11-11 15:57:36,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:36,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-11 15:57:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-11 15:57:36,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=5019, Unknown=0, NotChecked=0, Total=5550 [2024-11-11 15:57:36,442 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 75 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 75 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) [2024-11-11 15:57:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:57:38,614 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-11-11 15:57:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-11 15:57:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 75 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) Word has length 50 [2024-11-11 15:57:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:57:38,615 INFO L225 Difference]: With dead ends: 82 [2024-11-11 15:57:38,615 INFO L226 Difference]: Without dead ends: 66 [2024-11-11 15:57:38,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3443 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1273, Invalid=10937, Unknown=0, NotChecked=0, Total=12210 [2024-11-11 15:57:38,619 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 108 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:57:38,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 201 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-11 15:57:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-11 15:57:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2024-11-11 15:57:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 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) [2024-11-11 15:57:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-11 15:57:38,631 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 50 [2024-11-11 15:57:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:57:38,632 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-11 15:57:38,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.4933333333333334) internal successors, (112), 75 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) [2024-11-11 15:57:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-11 15:57:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-11 15:57:38,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:57:38,632 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:57:38,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-11 15:57:38,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-11 15:57:38,836 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:57:38,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:57:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1899679235, now seen corresponding path program 16 times [2024-11-11 15:57:38,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:57:38,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922260266] [2024-11-11 15:57:38,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:57:38,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:57:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:57:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:42,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:57:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922260266] [2024-11-11 15:57:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922260266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:57:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215516939] [2024-11-11 15:57:42,200 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:57:42,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:57:42,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:57:42,201 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:57:42,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-11 15:57:42,345 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:57:42,345 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:57:42,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-11 15:57:42,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:57:42,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:57:42,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:42,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:42,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:57:42,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:42,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:57:43,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:43,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-11 15:57:43,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:43,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-11 15:57:43,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:43,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-11 15:57:43,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:43,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:43,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:44,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:44,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:44,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:57:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:44,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:57:46,879 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 410 treesize of output 386 [2024-11-11 15:57:47,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:57:47,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 1743220245738 treesize of output 1719597925887 [2024-11-11 15:57:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:57:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215516939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:57:49,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:57:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 42, 42] total 122 [2024-11-11 15:57:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430952542] [2024-11-11 15:57:49,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:57:49,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-11 15:57:49,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:57:49,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-11 15:57:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1500, Invalid=13262, Unknown=0, NotChecked=0, Total=14762 [2024-11-11 15:57:49,569 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 122 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 122 states have internal predecessors, (152), 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) [2024-11-11 15:58:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:00,418 INFO L93 Difference]: Finished difference Result 191 states and 226 transitions. [2024-11-11 15:58:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-11 15:58:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 122 states have internal predecessors, (152), 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 55 [2024-11-11 15:58:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:00,419 INFO L225 Difference]: With dead ends: 191 [2024-11-11 15:58:00,419 INFO L226 Difference]: Without dead ends: 170 [2024-11-11 15:58:00,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10671 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=3356, Invalid=26400, Unknown=0, NotChecked=0, Total=29756 [2024-11-11 15:58:00,420 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:00,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 208 Invalid, 3788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-11 15:58:00,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-11 15:58:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 114. [2024-11-11 15:58:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 113 states have internal predecessors, (135), 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) [2024-11-11 15:58:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2024-11-11 15:58:00,454 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 55 [2024-11-11 15:58:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:00,454 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2024-11-11 15:58:00,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 122 states have internal predecessors, (152), 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) [2024-11-11 15:58:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2024-11-11 15:58:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-11 15:58:00,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:00,455 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:00,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-11 15:58:00,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-11 15:58:00,656 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:00,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -177410273, now seen corresponding path program 17 times [2024-11-11 15:58:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:00,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590284373] [2024-11-11 15:58:00,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:00,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-11 15:58:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590284373] [2024-11-11 15:58:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590284373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002287267] [2024-11-11 15:58:00,820 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:58:00,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:00,821 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:00,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-11 15:58:01,398 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-11 15:58:01,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:01,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-11 15:58:01,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 49 proven. 51 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 15:58:01,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 49 proven. 51 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 15:58:01,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002287267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:01,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:01,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-11 15:58:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246283994] [2024-11-11 15:58:01,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:01,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-11 15:58:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:01,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-11 15:58:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:58:01,592 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 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) [2024-11-11 15:58:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:01,770 INFO L93 Difference]: Finished difference Result 203 states and 235 transitions. [2024-11-11 15:58:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-11 15:58:01,771 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 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 57 [2024-11-11 15:58:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:01,771 INFO L225 Difference]: With dead ends: 203 [2024-11-11 15:58:01,771 INFO L226 Difference]: Without dead ends: 100 [2024-11-11 15:58:01,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 92 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-11 15:58:01,772 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 108 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:01,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 35 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:58:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-11 15:58:01,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2024-11-11 15:58:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 79 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) [2024-11-11 15:58:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2024-11-11 15:58:01,795 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 57 [2024-11-11 15:58:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:01,795 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2024-11-11 15:58:01,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 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) [2024-11-11 15:58:01,796 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2024-11-11 15:58:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-11 15:58:01,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:01,796 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:01,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:01,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:01,996 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:01,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1916145985, now seen corresponding path program 18 times [2024-11-11 15:58:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:01,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881703148] [2024-11-11 15:58:01,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 15:58:02,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:02,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881703148] [2024-11-11 15:58:02,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881703148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:02,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372150925] [2024-11-11 15:58:02,163 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:58:02,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:02,165 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:02,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-11 15:58:02,620 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-11 15:58:02,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:58:02,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-11 15:58:02,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 15:58:02,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:58:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 15:58:02,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372150925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:58:02,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:58:02,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-11 15:58:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645379820] [2024-11-11 15:58:02,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:58:02,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-11 15:58:02,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:58:02,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-11 15:58:02,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:58:02,828 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 26 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) [2024-11-11 15:58:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:58:03,045 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2024-11-11 15:58:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-11 15:58:03,045 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 26 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 57 [2024-11-11 15:58:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:58:03,045 INFO L225 Difference]: With dead ends: 99 [2024-11-11 15:58:03,045 INFO L226 Difference]: Without dead ends: 81 [2024-11-11 15:58:03,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 91 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2024-11-11 15:58:03,046 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 119 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:58:03,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 28 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:58:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-11 15:58:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2024-11-11 15:58:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.096774193548387) internal successors, (68), 62 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:58:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2024-11-11 15:58:03,061 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 57 [2024-11-11 15:58:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:58:03,061 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2024-11-11 15:58:03,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8461538461538463) internal successors, (74), 26 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) [2024-11-11 15:58:03,062 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2024-11-11 15:58:03,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-11 15:58:03,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:58:03,062 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:58:03,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-11 15:58:03,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:03,263 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:58:03,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:58:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1328267249, now seen corresponding path program 19 times [2024-11-11 15:58:03,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:58:03,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525766507] [2024-11-11 15:58:03,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:58:03,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:58:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 2 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:58:06,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:58:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525766507] [2024-11-11 15:58:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525766507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:58:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253456609] [2024-11-11 15:58:06,745 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 15:58:06,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:58:06,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:58:06,746 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:58:06,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-11 15:58:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:58:06,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-11-11 15:58:06,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:58:06,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:58:07,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:58:07,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:58:07,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:58:07,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:58:07,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:58:07,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:58:07,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-11 15:58:08,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:58:08,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-11 15:58:08,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:58:08,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-11 15:58:08,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:58:08,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-11-11 15:58:08,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:58:08,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:58:09,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:58:09,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11