./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sep40-1.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/reducercommutativity/sep40-1.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 f09ee736f3dbb8dbc36f75a04671608fd1c3014086677159a28111a32a84bd34 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:03:14,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:03:14,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:03:14,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:03:14,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:03:14,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:03:14,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:03:14,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:03:14,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:03:14,152 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:03:14,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:03:14,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:03:14,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:03:14,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:03:14,154 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:03:14,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:03:14,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:03:14,155 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:03:14,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:03:14,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:03:14,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:03:14,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:03:14,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:03:14,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:03:14,159 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:03:14,159 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:03:14,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:03:14,160 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:03:14,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:03:14,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:03:14,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:03:14,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:03:14,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:03:14,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:03:14,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:03:14,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:03:14,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:03:14,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:03:14,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:03:14,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:03:14,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:03:14,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:03:14,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f09ee736f3dbb8dbc36f75a04671608fd1c3014086677159a28111a32a84bd34 [2024-11-18 09:03:14,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:03:14,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:03:14,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:03:14,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:03:14,464 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:03:14,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep40-1.i [2024-11-18 09:03:15,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:03:16,247 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:03:16,249 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep40-1.i [2024-11-18 09:03:16,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4c905fb/85c43cd24f9f4e4d90faf8de467e3dbb/FLAG98e8ab31d [2024-11-18 09:03:16,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4c905fb/85c43cd24f9f4e4d90faf8de467e3dbb [2024-11-18 09:03:16,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:03:16,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:03:16,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:03:16,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:03:16,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:03:16,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2432d945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16, skipping insertion in model container [2024-11-18 09:03:16,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:03:16,596 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/reducercommutativity/sep40-1.i[1293,1306] [2024-11-18 09:03:16,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:03:16,606 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:03:16,625 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/reducercommutativity/sep40-1.i[1293,1306] [2024-11-18 09:03:16,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:03:16,644 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:03:16,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16 WrapperNode [2024-11-18 09:03:16,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:03:16,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:03:16,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:03:16,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:03:16,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,673 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-11-18 09:03:16,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:03:16,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:03:16,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:03:16,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:03:16,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,688 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,704 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-18 09:03:16,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:03:16,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:03:16,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:03:16,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:03:16,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (1/1) ... [2024-11-18 09:03:16,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:03:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:16,758 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 09:03:16,760 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 09:03:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:03:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:03:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:03:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:03:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2024-11-18 09:03:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2024-11-18 09:03:16,872 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:03:16,874 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:03:17,068 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 09:03:17,068 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:03:17,083 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:03:17,085 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 09:03:17,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:17 BoogieIcfgContainer [2024-11-18 09:03:17,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:03:17,089 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:03:17,089 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:03:17,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:03:17,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:03:16" (1/3) ... [2024-11-18 09:03:17,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731c98fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:17, skipping insertion in model container [2024-11-18 09:03:17,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:03:16" (2/3) ... [2024-11-18 09:03:17,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731c98fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:03:17, skipping insertion in model container [2024-11-18 09:03:17,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:03:17" (3/3) ... [2024-11-18 09:03:17,097 INFO L112 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2024-11-18 09:03:17,113 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:03:17,114 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:03:17,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:03:17,184 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;@56a849e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:03:17,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:03:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:03:17,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:17,198 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:17,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:17,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1179968903, now seen corresponding path program 1 times [2024-11-18 09:03:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:17,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856941404] [2024-11-18 09:03:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:03:17,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856941404] [2024-11-18 09:03:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856941404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:03:17,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:03:17,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:03:17,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888533025] [2024-11-18 09:03:17,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:03:17,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:03:17,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:03:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:03:17,560 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:17,610 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2024-11-18 09:03:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:03:17,615 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-18 09:03:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:17,621 INFO L225 Difference]: With dead ends: 54 [2024-11-18 09:03:17,622 INFO L226 Difference]: Without dead ends: 26 [2024-11-18 09:03:17,625 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 09:03:17,632 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:17,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-18 09:03:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-18 09:03:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-18 09:03:17,668 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2024-11-18 09:03:17,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:17,668 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-18 09:03:17,668 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-18 09:03:17,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-18 09:03:17,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:17,670 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:17,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:03:17,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:17,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:17,672 INFO L85 PathProgramCache]: Analyzing trace with hash 802434324, now seen corresponding path program 1 times [2024-11-18 09:03:17,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:17,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042141603] [2024-11-18 09:03:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:03:17,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042141603] [2024-11-18 09:03:17,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042141603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058409083] [2024-11-18 09:03:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:17,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:17,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:17,885 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 09:03:17,886 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 09:03:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:17,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:03:18,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 09:03:18,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:03:18,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058409083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:03:18,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:03:18,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:03:18,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252716300] [2024-11-18 09:03:18,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:03:18,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:03:18,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:03:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:18,034 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:18,055 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-11-18 09:03:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:03:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-18 09:03:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:18,056 INFO L225 Difference]: With dead ends: 46 [2024-11-18 09:03:18,056 INFO L226 Difference]: Without dead ends: 28 [2024-11-18 09:03:18,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:18,058 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:18,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-18 09:03:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-11-18 09:03:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-18 09:03:18,067 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 31 [2024-11-18 09:03:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:18,067 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-18 09:03:18,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-18 09:03:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 09:03:18,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:18,069 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:18,086 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 09:03:18,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:18,273 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:18,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -621262767, now seen corresponding path program 1 times [2024-11-18 09:03:18,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:18,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652746054] [2024-11-18 09:03:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:18,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 09:03:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652746054] [2024-11-18 09:03:18,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652746054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242445298] [2024-11-18 09:03:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:18,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:18,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:18,488 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 09:03:18,489 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 09:03:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:18,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:03:18,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 09:03:18,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:03:18,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242445298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:03:18,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:03:18,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:03:18,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734046195] [2024-11-18 09:03:18,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:03:18,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:03:18,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:18,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:03:18,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:18,621 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:18,635 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-18 09:03:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:03:18,636 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-18 09:03:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:18,637 INFO L225 Difference]: With dead ends: 42 [2024-11-18 09:03:18,637 INFO L226 Difference]: Without dead ends: 28 [2024-11-18 09:03:18,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:03:18,640 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:18,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-18 09:03:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-18 09:03:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-18 09:03:18,653 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 40 [2024-11-18 09:03:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:18,654 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-18 09:03:18,655 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:03:18,655 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-18 09:03:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 09:03:18,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:18,657 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:18,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 09:03:18,861 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,SelfDestructingSolverStorable2 [2024-11-18 09:03:18,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:18,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:18,863 INFO L85 PathProgramCache]: Analyzing trace with hash -862308077, now seen corresponding path program 1 times [2024-11-18 09:03:18,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196016867] [2024-11-18 09:03:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:18,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196016867] [2024-11-18 09:03:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196016867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437148717] [2024-11-18 09:03:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:03:19,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:19,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:19,017 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 09:03:19,019 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 09:03:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:19,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:03:19,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:19,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:19,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437148717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:19,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:19,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:03:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904357320] [2024-11-18 09:03:19,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:19,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:03:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:03:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:19,245 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:19,280 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2024-11-18 09:03:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:03:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2024-11-18 09:03:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:19,282 INFO L225 Difference]: With dead ends: 55 [2024-11-18 09:03:19,282 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 09:03:19,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:19,283 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:19,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 09:03:19,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-18 09:03:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-18 09:03:19,290 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 42 [2024-11-18 09:03:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:19,290 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-18 09:03:19,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-18 09:03:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 09:03:19,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:19,292 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:19,310 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 09:03:19,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:19,493 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:19,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1955489561, now seen corresponding path program 2 times [2024-11-18 09:03:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:19,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386825193] [2024-11-18 09:03:19,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:19,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:19,617 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:19,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 09:03:19,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386825193] [2024-11-18 09:03:19,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386825193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907318] [2024-11-18 09:03:19,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:19,772 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 09:03:19,837 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 09:03:19,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:19,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:19,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:03:19,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:20,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 09:03:20,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:20,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:20,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 09:03:20,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998127613] [2024-11-18 09:03:20,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:20,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:03:20,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:03:20,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:03:20,261 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:20,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:20,380 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2024-11-18 09:03:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:03:20,381 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-18 09:03:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:20,382 INFO L225 Difference]: With dead ends: 72 [2024-11-18 09:03:20,382 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 09:03:20,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:03:20,383 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:20,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:03:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 09:03:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-11-18 09:03:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-18 09:03:20,400 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 48 [2024-11-18 09:03:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:20,400 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-18 09:03:20,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-18 09:03:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 09:03:20,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:20,406 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:20,478 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 09:03:20,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:20,614 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:20,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:20,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1995207712, now seen corresponding path program 3 times [2024-11-18 09:03:20,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:20,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416331637] [2024-11-18 09:03:20,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:20,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:20,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:03:20,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-18 09:03:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416331637] [2024-11-18 09:03:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416331637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766619136] [2024-11-18 09:03:20,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:20,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:20,879 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 09:03:20,922 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 09:03:21,139 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 09:03:21,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:21,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:03:21,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-18 09:03:21,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-18 09:03:21,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766619136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:21,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:21,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:03:21,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285196623] [2024-11-18 09:03:21,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:21,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:03:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:03:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:21,236 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:21,287 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2024-11-18 09:03:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:03:21,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-18 09:03:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:21,290 INFO L225 Difference]: With dead ends: 71 [2024-11-18 09:03:21,290 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 09:03:21,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:03:21,291 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:21,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 09:03:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-18 09:03:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-11-18 09:03:21,309 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 69 [2024-11-18 09:03:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:21,310 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-11-18 09:03:21,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-11-18 09:03:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 09:03:21,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:21,317 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:21,365 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 09:03:21,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:21,519 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:21,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1036048934, now seen corresponding path program 4 times [2024-11-18 09:03:21,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:21,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160471898] [2024-11-18 09:03:21,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:03:21,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:21,628 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:03:21,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-18 09:03:21,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160471898] [2024-11-18 09:03:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160471898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676929128] [2024-11-18 09:03:21,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:03:21,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:21,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:21,827 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 09:03:21,829 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 09:03:21,937 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:03:21,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:21,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:03:21,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-18 09:03:21,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-18 09:03:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676929128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:22,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:22,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 09:03:22,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527313737] [2024-11-18 09:03:22,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:22,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:03:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:03:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:03:22,004 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:22,047 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2024-11-18 09:03:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:03:22,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2024-11-18 09:03:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:22,053 INFO L225 Difference]: With dead ends: 95 [2024-11-18 09:03:22,053 INFO L226 Difference]: Without dead ends: 66 [2024-11-18 09:03:22,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:03:22,054 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:22,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 125 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-18 09:03:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-18 09:03:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-18 09:03:22,067 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 75 [2024-11-18 09:03:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:22,067 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-18 09:03:22,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:22,068 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-18 09:03:22,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 09:03:22,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:22,070 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:22,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:03:22,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:22,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:22,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash 915396634, now seen corresponding path program 5 times [2024-11-18 09:03:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:22,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436437883] [2024-11-18 09:03:22,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:03:22,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:22,524 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:03:22,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 124 proven. 175 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-18 09:03:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436437883] [2024-11-18 09:03:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436437883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749639831] [2024-11-18 09:03:22,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:03:22,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:22,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:22,777 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 09:03:22,779 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 09:03:23,233 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-18 09:03:23,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:23,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:03:23,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-18 09:03:23,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-18 09:03:23,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749639831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:23,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-18 09:03:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419121030] [2024-11-18 09:03:23,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:23,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:03:23,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:03:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:03:23,440 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:23,506 INFO L93 Difference]: Finished difference Result 131 states and 168 transitions. [2024-11-18 09:03:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 09:03:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2024-11-18 09:03:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:23,508 INFO L225 Difference]: With dead ends: 131 [2024-11-18 09:03:23,508 INFO L226 Difference]: Without dead ends: 90 [2024-11-18 09:03:23,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:03:23,510 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 44 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:23,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 119 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-18 09:03:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-18 09:03:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.2) internal successors, (102), 85 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-11-18 09:03:23,524 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 111 [2024-11-18 09:03:23,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:23,525 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-11-18 09:03:23,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:03:23,525 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-11-18 09:03:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 09:03:23,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:23,527 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:23,547 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 09:03:23,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:23,731 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:23,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash -727065446, now seen corresponding path program 6 times [2024-11-18 09:03:23,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:23,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568689091] [2024-11-18 09:03:23,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:03:23,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:23,861 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:03:23,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2840 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:24,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568689091] [2024-11-18 09:03:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568689091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:24,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342546384] [2024-11-18 09:03:24,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:03:24,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:24,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:24,028 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 09:03:24,029 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 09:03:24,259 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 09:03:24,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:24,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:03:24,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2840 backedges. 1242 proven. 16 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2024-11-18 09:03:24,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2840 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:24,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342546384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:24,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:24,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-18 09:03:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804368572] [2024-11-18 09:03:24,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:24,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 09:03:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 09:03:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:03:24,383 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:24,429 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2024-11-18 09:03:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 09:03:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 183 [2024-11-18 09:03:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:24,431 INFO L225 Difference]: With dead ends: 155 [2024-11-18 09:03:24,431 INFO L226 Difference]: Without dead ends: 102 [2024-11-18 09:03:24,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-18 09:03:24,433 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:24,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 119 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:03:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-18 09:03:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-18 09:03:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2024-11-18 09:03:24,454 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 183 [2024-11-18 09:03:24,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:24,454 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2024-11-18 09:03:24,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2024-11-18 09:03:24,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-18 09:03:24,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:24,457 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:24,475 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 09:03:24,657 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,SelfDestructingSolverStorable8 [2024-11-18 09:03:24,658 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:24,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash 853040142, now seen corresponding path program 7 times [2024-11-18 09:03:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:24,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393721728] [2024-11-18 09:03:24,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:03:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2924 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:25,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393721728] [2024-11-18 09:03:25,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393721728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553968800] [2024-11-18 09:03:25,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:03:25,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:25,316 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 09:03:25,318 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 09:03:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:03:25,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:03:25,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2924 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:25,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2924 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:25,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553968800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:25,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:25,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:03:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517107910] [2024-11-18 09:03:25,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:25,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:03:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:03:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:03:25,825 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:25,895 INFO L93 Difference]: Finished difference Result 205 states and 252 transitions. [2024-11-18 09:03:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:03:25,896 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 195 [2024-11-18 09:03:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:25,898 INFO L225 Difference]: With dead ends: 205 [2024-11-18 09:03:25,898 INFO L226 Difference]: Without dead ends: 126 [2024-11-18 09:03:25,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:03:25,901 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:25,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:03:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-18 09:03:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-18 09:03:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.140495867768595) internal successors, (138), 121 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2024-11-18 09:03:25,917 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 195 [2024-11-18 09:03:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:25,917 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2024-11-18 09:03:25,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2024-11-18 09:03:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-18 09:03:25,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:25,920 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 22, 22, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:25,942 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 09:03:26,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 09:03:26,124 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:26,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1032668682, now seen corresponding path program 8 times [2024-11-18 09:03:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:26,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202514361] [2024-11-18 09:03:26,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:26,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:26,204 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:26,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3308 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:27,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202514361] [2024-11-18 09:03:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202514361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042695909] [2024-11-18 09:03:27,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:03:27,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:27,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:27,459 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 09:03:27,462 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 09:03:27,703 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:03:27,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:27,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 09:03:27,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3308 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:27,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3308 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2824 trivial. 0 not checked. [2024-11-18 09:03:28,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042695909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:28,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:28,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2024-11-18 09:03:28,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298944525] [2024-11-18 09:03:28,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:28,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 09:03:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:28,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 09:03:28,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 09:03:28,624 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand has 43 states, 43 states have (on average 2.558139534883721) internal successors, (110), 43 states have internal predecessors, (110), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:28,744 INFO L93 Difference]: Finished difference Result 241 states and 294 transitions. [2024-11-18 09:03:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 09:03:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.558139534883721) internal successors, (110), 43 states have internal predecessors, (110), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 219 [2024-11-18 09:03:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:28,746 INFO L225 Difference]: With dead ends: 241 [2024-11-18 09:03:28,746 INFO L226 Difference]: Without dead ends: 162 [2024-11-18 09:03:28,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 414 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 09:03:28,748 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:28,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:03:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-18 09:03:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-18 09:03:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.10828025477707) internal successors, (174), 157 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2024-11-18 09:03:28,774 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 219 [2024-11-18 09:03:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:28,774 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2024-11-18 09:03:28,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.558139534883721) internal successors, (110), 43 states have internal predecessors, (110), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:03:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2024-11-18 09:03:28,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-18 09:03:28,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:28,777 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 40, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:28,813 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 09:03:28,988 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,SelfDestructingSolverStorable10 [2024-11-18 09:03:28,989 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:28,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:28,989 INFO L85 PathProgramCache]: Analyzing trace with hash -897810990, now seen corresponding path program 9 times [2024-11-18 09:03:28,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:28,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600524060] [2024-11-18 09:03:28,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:28,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:29,198 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:03:29,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 09:03:29,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600524060] [2024-11-18 09:03:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600524060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:29,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583632553] [2024-11-18 09:03:29,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:03:29,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:29,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:29,712 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 09:03:29,714 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 09:03:30,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-18 09:03:30,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:30,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 09:03:30,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 1242 proven. 100 refuted. 0 times theorem prover too weak. 3082 trivial. 0 not checked. [2024-11-18 09:03:30,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 09:03:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583632553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:30,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-18 09:03:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402949054] [2024-11-18 09:03:30,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:30,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 09:03:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 09:03:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:03:30,626 INFO L87 Difference]: Start difference. First operand 162 states and 180 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:30,705 INFO L93 Difference]: Finished difference Result 239 states and 283 transitions. [2024-11-18 09:03:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 09:03:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 255 [2024-11-18 09:03:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:30,707 INFO L225 Difference]: With dead ends: 239 [2024-11-18 09:03:30,707 INFO L226 Difference]: Without dead ends: 186 [2024-11-18 09:03:30,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-18 09:03:30,708 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:30,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 96 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:03:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-18 09:03:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-11-18 09:03:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.0939226519337018) internal successors, (198), 181 states have internal predecessors, (198), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 204 transitions. [2024-11-18 09:03:30,727 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 204 transitions. Word has length 255 [2024-11-18 09:03:30,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:30,727 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 204 transitions. [2024-11-18 09:03:30,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:03:30,728 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 204 transitions. [2024-11-18 09:03:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-18 09:03:30,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:30,730 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 40, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:30,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:03:30,934 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,SelfDestructingSolverStorable11 [2024-11-18 09:03:30,935 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:30,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:30,936 INFO L85 PathProgramCache]: Analyzing trace with hash 980403898, now seen corresponding path program 10 times [2024-11-18 09:03:30,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:30,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4068377] [2024-11-18 09:03:30,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:03:30,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:31,226 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:03:31,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4808 backedges. 1240 proven. 287 refuted. 0 times theorem prover too weak. 3281 trivial. 0 not checked. [2024-11-18 09:03:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4068377] [2024-11-18 09:03:32,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4068377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929539758] [2024-11-18 09:03:32,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:03:32,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:32,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:32,221 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 09:03:32,223 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 09:03:32,564 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:03:32,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:32,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:03:32,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:03:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4808 backedges. 1240 proven. 287 refuted. 0 times theorem prover too weak. 3281 trivial. 0 not checked. [2024-11-18 09:03:32,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:03:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4808 backedges. 1240 proven. 287 refuted. 0 times theorem prover too weak. 3281 trivial. 0 not checked. [2024-11-18 09:03:33,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929539758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:03:33,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:03:33,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-18 09:03:33,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127257043] [2024-11-18 09:03:33,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:03:33,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 09:03:33,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:03:33,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 09:03:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:03:33,179 INFO L87 Difference]: Start difference. First operand 186 states and 204 transitions. Second operand has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:33,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:03:33,280 INFO L93 Difference]: Finished difference Result 335 states and 404 transitions. [2024-11-18 09:03:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 09:03:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 279 [2024-11-18 09:03:33,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:03:33,282 INFO L225 Difference]: With dead ends: 335 [2024-11-18 09:03:33,282 INFO L226 Difference]: Without dead ends: 234 [2024-11-18 09:03:33,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:03:33,283 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 106 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:03:33,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 173 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:03:33,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-18 09:03:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-11-18 09:03:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.1441048034934498) internal successors, (262), 229 states have internal predecessors, (262), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 09:03:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 268 transitions. [2024-11-18 09:03:33,292 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 268 transitions. Word has length 279 [2024-11-18 09:03:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:03:33,292 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 268 transitions. [2024-11-18 09:03:33,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 09:03:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 268 transitions. [2024-11-18 09:03:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-11-18 09:03:33,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:03:33,298 INFO L215 NwaCegarLoop]: trace histogram [90, 90, 90, 40, 40, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:03:33,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:03:33,498 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,SelfDestructingSolverStorable12 [2024-11-18 09:03:33,499 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:03:33,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:03:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash -830644294, now seen corresponding path program 11 times [2024-11-18 09:03:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:03:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201675102] [2024-11-18 09:03:33,500 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:03:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:03:37,040 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2024-11-18 09:03:37,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:03:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14384 backedges. 2764 proven. 4099 refuted. 0 times theorem prover too weak. 7521 trivial. 0 not checked. [2024-11-18 09:03:39,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:03:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201675102] [2024-11-18 09:03:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201675102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:03:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213241417] [2024-11-18 09:03:39,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:03:39,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:03:39,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:03:39,593 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 09:03:39,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process