./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/vogal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/loops/vogal-1.i -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 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:14:16,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:14:16,796 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:14:16,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:14:16,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:14:16,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:14:16,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:14:16,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:14:16,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:14:16,836 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:14:16,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:14:16,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:14:16,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:14:16,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:14:16,838 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:14:16,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:14:16,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:14:16,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:14:16,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:14:16,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:14:16,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:14:16,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:14:16,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:14:16,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:14:16,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:14:16,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:14:16,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:14:16,842 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:14:16,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:14:16,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:14:16,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:14:16,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:14:16,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:14:16,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:14:16,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:14:16,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:14:16,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:14:16,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:14:16,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:14:16,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:14:16,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:14:16,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:14:16,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e [2024-11-18 13:14:17,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:14:17,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:14:17,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:14:17,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:14:17,132 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:14:17,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/vogal-1.i [2024-11-18 13:14:18,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:14:18,741 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:14:18,742 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/vogal-1.i [2024-11-18 13:14:18,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f3f5e92a/3b8c8d854519435fa921093fe0e0c4fe/FLAG11dc5defd [2024-11-18 13:14:19,119 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f3f5e92a/3b8c8d854519435fa921093fe0e0c4fe [2024-11-18 13:14:19,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:14:19,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:14:19,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:14:19,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:14:19,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:14:19,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295a1c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19, skipping insertion in model container [2024-11-18 13:14:19,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,160 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:14:19,344 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/loops/vogal-1.i[895,908] [2024-11-18 13:14:19,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:14:19,389 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:14:19,400 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/loops/vogal-1.i[895,908] [2024-11-18 13:14:19,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:14:19,432 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:14:19,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19 WrapperNode [2024-11-18 13:14:19,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:14:19,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:14:19,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:14:19,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:14:19,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,467 INFO L138 Inliner]: procedures = 18, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 130 [2024-11-18 13:14:19,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:14:19,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:14:19,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:14:19,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:14:19,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,506 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 14, 6]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 13 writes are split as follows [0, 12, 1]. [2024-11-18 13:14:19,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:14:19,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:14:19,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:14:19,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:14:19,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (1/1) ... [2024-11-18 13:14:19,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:14:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:19,586 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) [2024-11-18 13:14:19,593 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 [2024-11-18 13:14:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:14:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:14:19,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 13:14:19,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 13:14:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:14:19,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:14:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 13:14:19,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 13:14:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 13:14:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 13:14:19,756 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:14:19,758 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:14:19,952 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 13:14:19,952 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:14:19,964 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:14:19,965 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 13:14:19,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:14:19 BoogieIcfgContainer [2024-11-18 13:14:19,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:14:19,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:14:19,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:14:19,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:14:19,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:14:19" (1/3) ... [2024-11-18 13:14:19,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6000035f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:14:19, skipping insertion in model container [2024-11-18 13:14:19,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:14:19" (2/3) ... [2024-11-18 13:14:19,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6000035f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:14:19, skipping insertion in model container [2024-11-18 13:14:19,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:14:19" (3/3) ... [2024-11-18 13:14:19,975 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2024-11-18 13:14:19,992 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:14:19,993 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:14:20,046 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:14:20,055 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;@733d017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:14:20,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:14:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 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) [2024-11-18 13:14:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 13:14:20,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:20,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:20,067 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:20,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:20,072 INFO L85 PathProgramCache]: Analyzing trace with hash 388073842, now seen corresponding path program 1 times [2024-11-18 13:14:20,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:20,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94472567] [2024-11-18 13:14:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:14:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94472567] [2024-11-18 13:14:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94472567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:14:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:14:20,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:14:20,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511602502] [2024-11-18 13:14:20,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:14:20,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:14:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:20,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:14:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:14:20,363 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 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) 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) [2024-11-18 13:14:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:20,377 INFO L93 Difference]: Finished difference Result 54 states and 82 transitions. [2024-11-18 13:14:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:14:20,379 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 [2024-11-18 13:14:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:20,384 INFO L225 Difference]: With dead ends: 54 [2024-11-18 13:14:20,385 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 13:14:20,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:14:20,390 INFO L432 NwaCegarLoop]: 37 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, 37 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 [2024-11-18 13:14:20,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:14:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 13:14:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 13:14:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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) [2024-11-18 13:14:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-18 13:14:20,426 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2024-11-18 13:14:20,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:20,427 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-18 13:14:20,427 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) [2024-11-18 13:14:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-18 13:14:20,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 13:14:20,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:20,429 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:20,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:14:20,429 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:20,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2016618829, now seen corresponding path program 1 times [2024-11-18 13:14:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:20,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196618432] [2024-11-18 13:14:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:14:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196618432] [2024-11-18 13:14:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196618432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:14:20,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:14:20,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:14:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840451586] [2024-11-18 13:14:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:14:20,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:14:20,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:20,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:14:20,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:14:20,646 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:20,708 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-11-18 13:14:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:14:20,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-18 13:14:20,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:20,710 INFO L225 Difference]: With dead ends: 63 [2024-11-18 13:14:20,710 INFO L226 Difference]: Without dead ends: 42 [2024-11-18 13:14:20,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:14:20,712 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:20,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:14:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-18 13:14:20,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 26. [2024-11-18 13:14:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-11-18 13:14:20,723 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 15 [2024-11-18 13:14:20,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:20,724 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-11-18 13:14:20,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-18 13:14:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 13:14:20,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:20,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:20,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:14:20,725 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:20,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2094228111, now seen corresponding path program 1 times [2024-11-18 13:14:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293910683] [2024-11-18 13:14:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:14:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293910683] [2024-11-18 13:14:20,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293910683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907230181] [2024-11-18 13:14:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:20,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:20,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:20,919 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) [2024-11-18 13:14:20,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:14:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:21,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:14:21,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:14:21,114 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:14:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907230181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:14:21,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:14:21,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-18 13:14:21,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124965312] [2024-11-18 13:14:21,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:14:21,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:14:21,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:14:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:14:21,119 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:21,151 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-11-18 13:14:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:14:21,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-18 13:14:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:21,152 INFO L225 Difference]: With dead ends: 49 [2024-11-18 13:14:21,152 INFO L226 Difference]: Without dead ends: 45 [2024-11-18 13:14:21,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:14:21,154 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:21,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 104 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:14:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-18 13:14:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2024-11-18 13:14:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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) [2024-11-18 13:14:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2024-11-18 13:14:21,163 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 17 [2024-11-18 13:14:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:21,164 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2024-11-18 13:14:21,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:21,164 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-11-18 13:14:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 13:14:21,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:21,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:21,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:14:21,365 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 [2024-11-18 13:14:21,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:21,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2138024952, now seen corresponding path program 1 times [2024-11-18 13:14:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958482273] [2024-11-18 13:14:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:21,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:14:21,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:21,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958482273] [2024-11-18 13:14:21,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958482273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:21,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355033359] [2024-11-18 13:14:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:21,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:21,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:21,530 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) [2024-11-18 13:14:21,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:14:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:21,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:14:21,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:14:21,696 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:14:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355033359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:14:21,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:14:21,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:14:21,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621275162] [2024-11-18 13:14:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:14:21,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:14:21,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:14:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:14:21,699 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:21,745 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2024-11-18 13:14:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:14:21,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-18 13:14:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:21,747 INFO L225 Difference]: With dead ends: 70 [2024-11-18 13:14:21,747 INFO L226 Difference]: Without dead ends: 42 [2024-11-18 13:14:21,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:14:21,748 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:21,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:14:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-18 13:14:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-18 13:14:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2024-11-18 13:14:21,754 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 23 [2024-11-18 13:14:21,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:21,754 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2024-11-18 13:14:21,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2024-11-18 13:14:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 13:14:21,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:21,755 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:21,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:14:21,956 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 [2024-11-18 13:14:21,957 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:21,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:21,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1093571635, now seen corresponding path program 1 times [2024-11-18 13:14:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:21,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049751921] [2024-11-18 13:14:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:21,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:14:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049751921] [2024-11-18 13:14:22,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049751921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483432578] [2024-11-18 13:14:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:22,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:22,107 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) [2024-11-18 13:14:22,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:14:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:22,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:14:22,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:14:22,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:14:22,470 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-18 13:14:22,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2024-11-18 13:14:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:14:22,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483432578] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:22,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:14:22,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 8] total 12 [2024-11-18 13:14:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703241903] [2024-11-18 13:14:22,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:14:22,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:14:22,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:14:22,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:14:22,493 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) [2024-11-18 13:14:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:22,652 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2024-11-18 13:14:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:14:22,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) Word has length 24 [2024-11-18 13:14:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:22,653 INFO L225 Difference]: With dead ends: 61 [2024-11-18 13:14:22,654 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 13:14:22,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:14:22,655 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:22,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 114 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:14:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 13:14:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-18 13:14:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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) [2024-11-18 13:14:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2024-11-18 13:14:22,660 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 24 [2024-11-18 13:14:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:22,660 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2024-11-18 13:14:22,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 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) [2024-11-18 13:14:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2024-11-18 13:14:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:14:22,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:22,661 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:22,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:14:22,865 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 [2024-11-18 13:14:22,866 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:22,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1875229501, now seen corresponding path program 1 times [2024-11-18 13:14:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255345846] [2024-11-18 13:14:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:14:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255345846] [2024-11-18 13:14:22,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255345846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:22,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661410244] [2024-11-18 13:14:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:22,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:22,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:22,955 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) [2024-11-18 13:14:22,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:14:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:23,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:14:23,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:23,115 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 8 [2024-11-18 13:14:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:14:23,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:14:23,226 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-18 13:14:23,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-11-18 13:14:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:14:23,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661410244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:14:23,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:14:23,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 12 [2024-11-18 13:14:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066232382] [2024-11-18 13:14:23,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:14:23,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 13:14:23,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 13:14:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:14:23,256 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:23,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:23,403 INFO L93 Difference]: Finished difference Result 125 states and 169 transitions. [2024-11-18 13:14:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:14:23,403 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-18 13:14:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:23,404 INFO L225 Difference]: With dead ends: 125 [2024-11-18 13:14:23,404 INFO L226 Difference]: Without dead ends: 90 [2024-11-18 13:14:23,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:14:23,405 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 129 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:23,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 126 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:14:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-18 13:14:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 44. [2024-11-18 13:14:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 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) [2024-11-18 13:14:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-11-18 13:14:23,412 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 25 [2024-11-18 13:14:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:23,412 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-11-18 13:14:23,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-11-18 13:14:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:14:23,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:23,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:23,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:14:23,614 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 [2024-11-18 13:14:23,614 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:23,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash -90463216, now seen corresponding path program 1 times [2024-11-18 13:14:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338610746] [2024-11-18 13:14:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:23,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:14:23,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338610746] [2024-11-18 13:14:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338610746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112309207] [2024-11-18 13:14:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:23,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:23,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:23,722 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) [2024-11-18 13:14:23,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:14:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:23,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 13:14:23,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:23,830 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 60 treesize of output 59 [2024-11-18 13:14:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:14:27,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:14:28,210 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-18 13:14:28,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2024-11-18 13:14:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:14:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112309207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:14:28,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:14:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 12] total 23 [2024-11-18 13:14:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029669993] [2024-11-18 13:14:28,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:14:28,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 13:14:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 13:14:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:14:28,258 INFO L87 Difference]: Start difference. First operand 44 states and 56 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) [2024-11-18 13:14:34,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:34,474 INFO L93 Difference]: Finished difference Result 157 states and 211 transitions. [2024-11-18 13:14:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 13:14:34,479 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 28 [2024-11-18 13:14:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:34,480 INFO L225 Difference]: With dead ends: 157 [2024-11-18 13:14:34,480 INFO L226 Difference]: Without dead ends: 120 [2024-11-18 13:14:34,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 13:14:34,481 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 345 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:34,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 240 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 13:14:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-18 13:14:34,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 47. [2024-11-18 13:14:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-18 13:14:34,496 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 28 [2024-11-18 13:14:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:34,496 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-18 13:14:34,496 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) [2024-11-18 13:14:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-18 13:14:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:14:34,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:34,497 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:34,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:14:34,701 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 [2024-11-18 13:14:34,702 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:34,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash -926448804, now seen corresponding path program 1 times [2024-11-18 13:14:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:34,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858190510] [2024-11-18 13:14:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:14:34,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:34,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858190510] [2024-11-18 13:14:34,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858190510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:34,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13722662] [2024-11-18 13:14:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:34,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:34,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:34,835 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) [2024-11-18 13:14:34,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:14:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:34,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:14:34,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:14:34,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:14:34,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13722662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:14:34,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:14:34,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 13:14:34,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294129910] [2024-11-18 13:14:34,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:14:34,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:14:34,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:34,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:14:34,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:14:34,922 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:34,947 INFO L93 Difference]: Finished difference Result 89 states and 119 transitions. [2024-11-18 13:14:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:14:34,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 33 [2024-11-18 13:14:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:34,948 INFO L225 Difference]: With dead ends: 89 [2024-11-18 13:14:34,948 INFO L226 Difference]: Without dead ends: 59 [2024-11-18 13:14:34,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:14:34,949 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:34,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:14:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-18 13:14:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-18 13:14:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:34,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-18 13:14:34,961 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 33 [2024-11-18 13:14:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:34,961 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-18 13:14:34,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-18 13:14:34,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:14:34,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:34,962 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:34,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 13:14:35,162 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 [2024-11-18 13:14:35,163 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:35,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1076823445, now seen corresponding path program 1 times [2024-11-18 13:14:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934626997] [2024-11-18 13:14:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 13:14:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934626997] [2024-11-18 13:14:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934626997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389111481] [2024-11-18 13:14:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:14:35,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:35,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:35,297 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) [2024-11-18 13:14:35,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:14:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:14:35,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:14:35,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 13:14:35,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:14:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:14:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389111481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:14:35,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:14:35,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2024-11-18 13:14:35,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796062277] [2024-11-18 13:14:35,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:14:35,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:14:35,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:35,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:14:35,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:14:35,444 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:35,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:14:35,833 INFO L93 Difference]: Finished difference Result 306 states and 427 transitions. [2024-11-18 13:14:35,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:14:35,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-18 13:14:35,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:14:35,836 INFO L225 Difference]: With dead ends: 306 [2024-11-18 13:14:35,838 INFO L226 Difference]: Without dead ends: 264 [2024-11-18 13:14:35,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:14:35,839 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 291 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:14:35,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 247 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:14:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-18 13:14:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 65. [2024-11-18 13:14:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2024-11-18 13:14:35,871 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 36 [2024-11-18 13:14:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:14:35,872 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2024-11-18 13:14:35,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:14:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2024-11-18 13:14:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 13:14:35,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:14:35,876 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:14:35,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 13:14:36,077 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 [2024-11-18 13:14:36,077 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:14:36,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:14:36,078 INFO L85 PathProgramCache]: Analyzing trace with hash 370373592, now seen corresponding path program 2 times [2024-11-18 13:14:36,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:14:36,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549769890] [2024-11-18 13:14:36,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:14:36,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:14:36,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:14:36,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:14:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:14:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:14:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549769890] [2024-11-18 13:14:36,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549769890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:14:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002586434] [2024-11-18 13:14:36,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:14:36,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:14:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:14:36,287 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) [2024-11-18 13:14:36,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:14:36,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:14:36,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:14:36,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 13:14:36,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:14:36,451 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 60 treesize of output 59 [2024-11-18 13:14:40,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:14:40,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 47 [2024-11-18 13:14:40,119 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 126 treesize of output 108 [2024-11-18 13:14:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:14:40,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:14:40,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:14:40,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 63 [2024-11-18 13:14:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:14:41,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002586434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:14:41,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:14:41,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 14] total 30 [2024-11-18 13:14:41,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092739336] [2024-11-18 13:14:41,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:14:41,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 13:14:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:14:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 13:14:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:14:41,169 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:11,887 INFO L93 Difference]: Finished difference Result 490 states and 683 transitions. [2024-11-18 13:15:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-18 13:15:11,887 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-18 13:15:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:11,889 INFO L225 Difference]: With dead ends: 490 [2024-11-18 13:15:11,889 INFO L226 Difference]: Without dead ends: 436 [2024-11-18 13:15:11,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3689 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=2030, Invalid=9312, Unknown=0, NotChecked=0, Total=11342 [2024-11-18 13:15:11,893 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1967 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:11,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 600 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-11-18 13:15:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-18 13:15:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 81. [2024-11-18 13:15:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.275) internal successors, (102), 80 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2024-11-18 13:15:11,931 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 44 [2024-11-18 13:15:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:11,931 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2024-11-18 13:15:11,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1333333333333333) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2024-11-18 13:15:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:15:11,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:11,935 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:11,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:15:12,135 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 [2024-11-18 13:15:12,136 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:12,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:12,136 INFO L85 PathProgramCache]: Analyzing trace with hash -528372772, now seen corresponding path program 1 times [2024-11-18 13:15:12,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:12,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052300664] [2024-11-18 13:15:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:12,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:15:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052300664] [2024-11-18 13:15:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052300664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460667027] [2024-11-18 13:15:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:13,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:13,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:13,432 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) [2024-11-18 13:15:13,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:15:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:13,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 13:15:13,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:14,017 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 19 treesize of output 11 [2024-11-18 13:15:14,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 13:15:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:15:14,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:14,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:15:14,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2024-11-18 13:15:14,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:15:14,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 35 [2024-11-18 13:15:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:15:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460667027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:14,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2024-11-18 13:15:14,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63075112] [2024-11-18 13:15:14,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:14,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 13:15:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 13:15:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:15:14,705 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 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) [2024-11-18 13:15:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:21,564 INFO L93 Difference]: Finished difference Result 387 states and 512 transitions. [2024-11-18 13:15:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-18 13:15:21,565 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 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 46 [2024-11-18 13:15:21,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:21,566 INFO L225 Difference]: With dead ends: 387 [2024-11-18 13:15:21,566 INFO L226 Difference]: Without dead ends: 249 [2024-11-18 13:15:21,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8993 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3223, Invalid=20339, Unknown=0, NotChecked=0, Total=23562 [2024-11-18 13:15:21,571 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 646 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:21,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 518 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 13:15:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-18 13:15:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 147. [2024-11-18 13:15:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.2465753424657535) internal successors, (182), 146 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-11-18 13:15:21,615 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 46 [2024-11-18 13:15:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:21,615 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-11-18 13:15:21,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 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) [2024-11-18 13:15:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-11-18 13:15:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:15:21,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:21,617 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:21,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:15:21,817 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 [2024-11-18 13:15:21,817 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:21,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -105670946, now seen corresponding path program 1 times [2024-11-18 13:15:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231041285] [2024-11-18 13:15:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 13:15:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231041285] [2024-11-18 13:15:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231041285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944119144] [2024-11-18 13:15:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:22,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:22,236 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) [2024-11-18 13:15:22,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:15:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:22,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 13:15:22,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:15:22,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:15:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944119144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:22,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 13] total 27 [2024-11-18 13:15:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939420127] [2024-11-18 13:15:22,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:22,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 13:15:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:22,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 13:15:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2024-11-18 13:15:22,788 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:23,402 INFO L93 Difference]: Finished difference Result 342 states and 425 transitions. [2024-11-18 13:15:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 13:15:23,402 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 13:15:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:23,404 INFO L225 Difference]: With dead ends: 342 [2024-11-18 13:15:23,404 INFO L226 Difference]: Without dead ends: 338 [2024-11-18 13:15:23,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=1417, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 13:15:23,405 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 160 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:23,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 431 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:15:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-18 13:15:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 197. [2024-11-18 13:15:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.260204081632653) internal successors, (247), 196 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 247 transitions. [2024-11-18 13:15:23,473 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 247 transitions. Word has length 46 [2024-11-18 13:15:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:23,474 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 247 transitions. [2024-11-18 13:15:23,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 247 transitions. [2024-11-18 13:15:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:15:23,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:23,475 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:23,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:23,675 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 [2024-11-18 13:15:23,676 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:23,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash 152494492, now seen corresponding path program 1 times [2024-11-18 13:15:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:23,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732917055] [2024-11-18 13:15:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:15:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732917055] [2024-11-18 13:15:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732917055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818762860] [2024-11-18 13:15:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:24,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:24,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:24,911 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) [2024-11-18 13:15:24,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 13:15:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:25,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 13:15:25,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:25,327 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 19 treesize of output 11 [2024-11-18 13:15:25,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 13:15:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:15:25,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:25,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:15:25,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 56 [2024-11-18 13:15:25,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:15:25,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 35 [2024-11-18 13:15:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:15:25,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818762860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:25,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 33 [2024-11-18 13:15:25,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246880489] [2024-11-18 13:15:25,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:25,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 13:15:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 13:15:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 13:15:25,767 INFO L87 Difference]: Start difference. First operand 197 states and 247 transitions. Second operand has 33 states, 33 states have (on average 2.484848484848485) internal successors, (82), 33 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) [2024-11-18 13:15:26,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:26,776 INFO L93 Difference]: Finished difference Result 487 states and 597 transitions. [2024-11-18 13:15:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 13:15:26,777 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.484848484848485) internal successors, (82), 33 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 46 [2024-11-18 13:15:26,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:26,778 INFO L225 Difference]: With dead ends: 487 [2024-11-18 13:15:26,778 INFO L226 Difference]: Without dead ends: 392 [2024-11-18 13:15:26,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=648, Invalid=2774, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 13:15:26,780 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 321 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:26,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 227 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:15:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-18 13:15:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 238. [2024-11-18 13:15:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.2658227848101267) internal successors, (300), 237 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 300 transitions. [2024-11-18 13:15:26,853 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 300 transitions. Word has length 46 [2024-11-18 13:15:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:26,854 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 300 transitions. [2024-11-18 13:15:26,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.484848484848485) internal successors, (82), 33 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) [2024-11-18 13:15:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 300 transitions. [2024-11-18 13:15:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:15:26,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:26,857 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:26,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:27,058 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 [2024-11-18 13:15:27,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:27,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:27,059 INFO L85 PathProgramCache]: Analyzing trace with hash -239684452, now seen corresponding path program 1 times [2024-11-18 13:15:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:27,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092510979] [2024-11-18 13:15:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:27,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:15:27,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:27,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092510979] [2024-11-18 13:15:27,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092510979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:27,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855936785] [2024-11-18 13:15:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:15:27,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:27,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:27,979 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) [2024-11-18 13:15:27,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 13:15:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:15:28,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 13:15:28,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:28,381 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 20 treesize of output 12 [2024-11-18 13:15:28,384 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 8 [2024-11-18 13:15:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:15:28,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:28,767 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-18 13:15:28,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-18 13:15:28,775 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-18 13:15:28,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2024-11-18 13:15:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:15:28,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855936785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:28,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:28,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 37 [2024-11-18 13:15:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732757874] [2024-11-18 13:15:28,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:28,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 13:15:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 13:15:28,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1069, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 13:15:28,830 INFO L87 Difference]: Start difference. First operand 238 states and 300 transitions. Second operand has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:29,963 INFO L93 Difference]: Finished difference Result 630 states and 800 transitions. [2024-11-18 13:15:29,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 13:15:29,963 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 13:15:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:29,965 INFO L225 Difference]: With dead ends: 630 [2024-11-18 13:15:29,965 INFO L226 Difference]: Without dead ends: 399 [2024-11-18 13:15:29,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=872, Invalid=3550, Unknown=0, NotChecked=0, Total=4422 [2024-11-18 13:15:29,967 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 289 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:29,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 312 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:15:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-18 13:15:30,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 279. [2024-11-18 13:15:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 278 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 346 transitions. [2024-11-18 13:15:30,052 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 346 transitions. Word has length 46 [2024-11-18 13:15:30,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:30,053 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 346 transitions. [2024-11-18 13:15:30,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2972972972972974) internal successors, (85), 37 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:30,053 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 346 transitions. [2024-11-18 13:15:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:15:30,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:30,054 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:30,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:30,254 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 [2024-11-18 13:15:30,254 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:30,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash -661577384, now seen corresponding path program 2 times [2024-11-18 13:15:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:30,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487675077] [2024-11-18 13:15:30,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:15:30,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:30,299 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:15:30,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:15:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487675077] [2024-11-18 13:15:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487675077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135560630] [2024-11-18 13:15:31,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:15:31,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:31,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:31,428 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) [2024-11-18 13:15:31,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 13:15:31,544 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:15:31,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:31,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 13:15:31,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:31,922 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 20 treesize of output 12 [2024-11-18 13:15:31,924 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 8 [2024-11-18 13:15:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:15:31,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:32,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:15:32,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2024-11-18 13:15:32,374 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-18 13:15:32,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 9 [2024-11-18 13:15:32,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:15:32,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 3 [2024-11-18 13:15:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:15:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135560630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:32,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:32,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 41 [2024-11-18 13:15:32,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504116529] [2024-11-18 13:15:32,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:32,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-18 13:15:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:32,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-18 13:15:32,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1370, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 13:15:32,452 INFO L87 Difference]: Start difference. First operand 279 states and 346 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:34,150 INFO L93 Difference]: Finished difference Result 500 states and 610 transitions. [2024-11-18 13:15:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-18 13:15:34,150 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 13:15:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:34,151 INFO L225 Difference]: With dead ends: 500 [2024-11-18 13:15:34,151 INFO L226 Difference]: Without dead ends: 433 [2024-11-18 13:15:34,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1150, Invalid=5012, Unknown=0, NotChecked=0, Total=6162 [2024-11-18 13:15:34,154 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 322 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:34,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 337 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:15:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-11-18 13:15:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 278. [2024-11-18 13:15:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.227436823104693) internal successors, (340), 277 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 340 transitions. [2024-11-18 13:15:34,235 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 340 transitions. Word has length 46 [2024-11-18 13:15:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:34,236 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 340 transitions. [2024-11-18 13:15:34,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 340 transitions. [2024-11-18 13:15:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 13:15:34,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:34,237 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:34,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:34,437 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 [2024-11-18 13:15:34,438 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:34,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash -723438098, now seen corresponding path program 2 times [2024-11-18 13:15:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:34,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898588741] [2024-11-18 13:15:34,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:15:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:34,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:15:34,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 13:15:35,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:35,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898588741] [2024-11-18 13:15:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898588741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282613341] [2024-11-18 13:15:35,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:15:35,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:35,111 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) [2024-11-18 13:15:35,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 13:15:35,221 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:15:35,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:35,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-18 13:15:35,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:35,231 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 40 treesize of output 39 [2024-11-18 13:15:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:15:36,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 33 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:15:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282613341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:37,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 22] total 51 [2024-11-18 13:15:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389682823] [2024-11-18 13:15:37,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:37,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-18 13:15:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-18 13:15:37,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=2094, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 13:15:37,802 INFO L87 Difference]: Start difference. First operand 278 states and 340 transitions. Second operand has 51 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 51 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:39,636 INFO L93 Difference]: Finished difference Result 483 states and 588 transitions. [2024-11-18 13:15:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-18 13:15:39,636 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 51 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-18 13:15:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:39,638 INFO L225 Difference]: With dead ends: 483 [2024-11-18 13:15:39,638 INFO L226 Difference]: Without dead ends: 400 [2024-11-18 13:15:39,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=935, Invalid=4035, Unknown=0, NotChecked=0, Total=4970 [2024-11-18 13:15:39,639 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 233 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:39,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 429 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 13:15:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-18 13:15:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 258. [2024-11-18 13:15:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.2334630350194553) internal successors, (317), 257 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2024-11-18 13:15:39,727 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 56 [2024-11-18 13:15:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:39,727 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2024-11-18 13:15:39,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 51 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2024-11-18 13:15:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 13:15:39,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:39,729 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:39,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:39,929 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 [2024-11-18 13:15:39,930 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:39,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:39,930 INFO L85 PathProgramCache]: Analyzing trace with hash -41484349, now seen corresponding path program 3 times [2024-11-18 13:15:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892570151] [2024-11-18 13:15:39,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:15:39,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:39,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:15:39,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 13:15:40,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:40,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892570151] [2024-11-18 13:15:40,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892570151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:40,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12979882] [2024-11-18 13:15:40,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:15:40,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:40,488 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) [2024-11-18 13:15:40,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 13:15:40,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:15:40,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:40,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 13:15:40,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:40,730 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 8 [2024-11-18 13:15:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 13:15:40,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:40,905 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-18 13:15:40,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 31 [2024-11-18 13:15:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 13:15:40,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12979882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:40,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:40,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 20 [2024-11-18 13:15:40,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401628039] [2024-11-18 13:15:40,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:40,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 13:15:40,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:40,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 13:15:40,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-18 13:15:40,933 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:41,190 INFO L93 Difference]: Finished difference Result 400 states and 495 transitions. [2024-11-18 13:15:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:15:41,191 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-18 13:15:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:41,192 INFO L225 Difference]: With dead ends: 400 [2024-11-18 13:15:41,192 INFO L226 Difference]: Without dead ends: 396 [2024-11-18 13:15:41,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:15:41,193 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 81 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:41,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 275 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:15:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-18 13:15:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 276. [2024-11-18 13:15:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.2181818181818183) internal successors, (335), 275 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 335 transitions. [2024-11-18 13:15:41,274 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 335 transitions. Word has length 57 [2024-11-18 13:15:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:41,274 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 335 transitions. [2024-11-18 13:15:41,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 335 transitions. [2024-11-18 13:15:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 13:15:41,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:41,275 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:41,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:41,476 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 [2024-11-18 13:15:41,476 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:41,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2044296045, now seen corresponding path program 4 times [2024-11-18 13:15:41,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:41,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621687409] [2024-11-18 13:15:41,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:15:41,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:41,538 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:15:41,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:15:41,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:41,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621687409] [2024-11-18 13:15:41,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621687409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:41,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946904334] [2024-11-18 13:15:41,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:15:41,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:41,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:41,889 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) [2024-11-18 13:15:41,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 13:15:42,001 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:15:42,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:42,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 13:15:42,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:15:42,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:15:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:15:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946904334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:15:42,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:15:42,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 19 [2024-11-18 13:15:42,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659814947] [2024-11-18 13:15:42,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:15:42,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 13:15:42,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:15:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 13:15:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:15:42,238 INFO L87 Difference]: Start difference. First operand 276 states and 335 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:15:42,951 INFO L93 Difference]: Finished difference Result 718 states and 876 transitions. [2024-11-18 13:15:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 13:15:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 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 67 [2024-11-18 13:15:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:15:42,954 INFO L225 Difference]: With dead ends: 718 [2024-11-18 13:15:42,954 INFO L226 Difference]: Without dead ends: 714 [2024-11-18 13:15:42,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 13:15:42,956 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 264 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:15:42,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1040 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:15:42,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-11-18 13:15:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 418. [2024-11-18 13:15:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.2182254196642686) internal successors, (508), 417 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 508 transitions. [2024-11-18 13:15:43,104 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 508 transitions. Word has length 67 [2024-11-18 13:15:43,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:15:43,104 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 508 transitions. [2024-11-18 13:15:43,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:15:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 508 transitions. [2024-11-18 13:15:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 13:15:43,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:15:43,106 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:15:43,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 13:15:43,306 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 [2024-11-18 13:15:43,306 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:15:43,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:15:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1786130607, now seen corresponding path program 5 times [2024-11-18 13:15:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:15:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680778970] [2024-11-18 13:15:43,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:15:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:15:43,404 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 13:15:43,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:15:45,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:15:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680778970] [2024-11-18 13:15:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680778970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:15:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915801858] [2024-11-18 13:15:45,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:15:45,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:15:45,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:15:45,279 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) [2024-11-18 13:15:45,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 13:15:45,664 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 13:15:45,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:15:45,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 13:15:45,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:15:45,742 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 51 treesize of output 38 [2024-11-18 13:15:45,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-11-18 13:15:46,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 13:15:46,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2024-11-18 13:15:46,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 13:15:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 20 proven. 53 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 13:15:46,197 INFO L311 TraceCheckSpWp]: Computing backward predicates...