./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:06:50,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:06:50,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:06:51,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:06:51,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:06:51,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:06:51,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:06:51,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:06:51,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:06:51,040 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:06:51,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:06:51,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:06:51,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:06:51,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:06:51,044 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:06:51,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:06:51,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:06:51,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:06:51,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:06:51,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:06:51,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:06:51,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:06:51,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:06:51,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:06:51,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:06:51,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:06:51,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:06:51,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:06:51,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:06:51,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:06:51,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:06:51,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:06:51,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:06:51,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:06:51,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:06:51,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:06:51,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:06:51,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:06:51,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:06:51,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:06:51,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:06:51,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:06:51,055 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df [2024-10-10 22:06:51,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:06:51,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:06:51,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:06:51,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:06:51,332 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:06:51,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum1.i [2024-10-10 22:06:52,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:06:52,873 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:06:52,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum1.i [2024-10-10 22:06:52,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/433ca6f43/de04bb8d30454db687879253bfb92e5d/FLAG7a54a097d [2024-10-10 22:06:52,900 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/433ca6f43/de04bb8d30454db687879253bfb92e5d [2024-10-10 22:06:52,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:06:52,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:06:52,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:06:52,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:06:52,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:06:52,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:06:52" (1/1) ... [2024-10-10 22:06:52,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35572d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:52, skipping insertion in model container [2024-10-10 22:06:52,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:06:52" (1/1) ... [2024-10-10 22:06:52,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:06:53,131 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2024-10-10 22:06:53,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:06:53,148 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:06:53,170 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2024-10-10 22:06:53,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:06:53,190 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:06:53,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53 WrapperNode [2024-10-10 22:06:53,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:06:53,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:06:53,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:06:53,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:06:53,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,227 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2024-10-10 22:06:53,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:06:53,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:06:53,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:06:53,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:06:53,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,256 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]. [2024-10-10 22:06:53,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:06:53,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:06:53,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:06:53,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:06:53,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (1/1) ... [2024-10-10 22:06:53,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:06:53,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:53,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:06:53,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:06:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:06:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2024-10-10 22:06:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2024-10-10 22:06:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:06:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:06:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:06:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:06:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:06:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:06:53,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:06:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:06:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:06:53,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:06:53,446 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:06:53,448 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:06:53,596 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-10 22:06:53,596 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:06:53,633 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:06:53,633 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-10 22:06:53,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:06:53 BoogieIcfgContainer [2024-10-10 22:06:53,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:06:53,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:06:53,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:06:53,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:06:53,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:06:52" (1/3) ... [2024-10-10 22:06:53,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4985e753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:06:53, skipping insertion in model container [2024-10-10 22:06:53,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:06:53" (2/3) ... [2024-10-10 22:06:53,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4985e753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:06:53, skipping insertion in model container [2024-10-10 22:06:53,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:06:53" (3/3) ... [2024-10-10 22:06:53,643 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum1.i [2024-10-10 22:06:53,661 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:06:53,661 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:06:53,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:06:53,715 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;@4750c1fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:06:53,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:06:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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) [2024-10-10 22:06:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 22:06:53,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:53,725 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:53,725 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:53,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:53,729 INFO L85 PathProgramCache]: Analyzing trace with hash -307325283, now seen corresponding path program 1 times [2024-10-10 22:06:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:53,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475737516] [2024-10-10 22:06:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:53,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:53,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-10 22:06:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 22:06:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:06:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:06:54,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:54,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475737516] [2024-10-10 22:06:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475737516] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11621672] [2024-10-10 22:06:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:54,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:54,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:54,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:54,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:06:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-10 22:06:54,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:06:54,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:06:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11621672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:06:54,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:06:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-10-10 22:06:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398943088] [2024-10-10 22:06:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:06:54,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:06:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:06:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:06:54,228 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-10-10 22:06:54,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:54,287 INFO L93 Difference]: Finished difference Result 38 states and 55 transitions. [2024-10-10 22:06:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:06:54,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 25 [2024-10-10 22:06:54,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:54,296 INFO L225 Difference]: With dead ends: 38 [2024-10-10 22:06:54,296 INFO L226 Difference]: Without dead ends: 18 [2024-10-10 22:06:54,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:06:54,302 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 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 [2024-10-10 22:06:54,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:54,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-10 22:06:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-10 22:06:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-10-10 22:06:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-10 22:06:54,331 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 25 [2024-10-10 22:06:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:54,333 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-10 22:06:54,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-10-10 22:06:54,333 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-10 22:06:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-10 22:06:54,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:54,335 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:54,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:06:54,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-10 22:06:54,536 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:54,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash 871755747, now seen corresponding path program 1 times [2024-10-10 22:06:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380055098] [2024-10-10 22:06:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-10 22:06:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 22:06:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:06:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:06:54,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:54,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380055098] [2024-10-10 22:06:54,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380055098] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:54,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960490821] [2024-10-10 22:06:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:54,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:54,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:54,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:06:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:54,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:06:54,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:06:54,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:06:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960490821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:06:54,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:06:54,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-10 22:06:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418915990] [2024-10-10 22:06:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:06:54,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:06:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:06:54,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:06:54,766 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-10-10 22:06:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:54,792 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-10-10 22:06:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:06:54,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 25 [2024-10-10 22:06:54,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:54,793 INFO L225 Difference]: With dead ends: 35 [2024-10-10 22:06:54,793 INFO L226 Difference]: Without dead ends: 19 [2024-10-10 22:06:54,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:06:54,796 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:54,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-10 22:06:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-10 22:06:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-10-10 22:06:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-10-10 22:06:54,804 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2024-10-10 22:06:54,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:54,805 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-10-10 22:06:54,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2024-10-10 22:06:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-10-10 22:06:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-10 22:06:54,810 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:54,810 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:54,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 22:06:55,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:55,012 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:55,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash -25583204, now seen corresponding path program 1 times [2024-10-10 22:06:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:55,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528481174] [2024-10-10 22:06:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:55,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:06:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-10 22:06:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-10 22:06:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-10 22:06:55,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:55,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528481174] [2024-10-10 22:06:55,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528481174] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:55,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261904353] [2024-10-10 22:06:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:55,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:55,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:55,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:06:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:06:55,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 22:06:55,253 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:06:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261904353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:06:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:06:55,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-10-10 22:06:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134314724] [2024-10-10 22:06:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:06:55,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:06:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:06:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:06:55,256 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-10-10 22:06:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:55,277 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2024-10-10 22:06:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:06:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 26 [2024-10-10 22:06:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:55,279 INFO L225 Difference]: With dead ends: 34 [2024-10-10 22:06:55,279 INFO L226 Difference]: Without dead ends: 20 [2024-10-10 22:06:55,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:06:55,281 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:55,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-10 22:06:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-10 22:06:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2024-10-10 22:06:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-10 22:06:55,288 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2024-10-10 22:06:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:55,289 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-10 22:06:55,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-10-10 22:06:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-10 22:06:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-10 22:06:55,291 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:55,291 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] [2024-10-10 22:06:55,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:06:55,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:55,496 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:55,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:55,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1557288968, now seen corresponding path program 1 times [2024-10-10 22:06:55,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:55,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048623110] [2024-10-10 22:06:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:55,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:06:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-10 22:06:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-10 22:06:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-10 22:06:55,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048623110] [2024-10-10 22:06:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048623110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975705065] [2024-10-10 22:06:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:55,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:55,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:55,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:06:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:06:55,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-10 22:06:55,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:06:55,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975705065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:06:55,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:06:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-10 22:06:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182129697] [2024-10-10 22:06:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:06:55,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:06:55,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:06:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:06:55,671 INFO L87 Difference]: Start difference. First operand 20 states and 24 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), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:06:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:55,697 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-10-10 22:06:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:06:55,698 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), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-10-10 22:06:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:55,699 INFO L225 Difference]: With dead ends: 32 [2024-10-10 22:06:55,699 INFO L226 Difference]: Without dead ends: 21 [2024-10-10 22:06:55,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:06:55,701 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:55,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-10 22:06:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-10 22:06:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2024-10-10 22:06:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-10-10 22:06:55,710 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 29 [2024-10-10 22:06:55,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:55,710 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-10-10 22:06:55,711 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), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:06:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-10-10 22:06:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 22:06:55,713 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:55,713 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] [2024-10-10 22:06:55,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:06:55,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:55,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:55,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1460044313, now seen corresponding path program 1 times [2024-10-10 22:06:55,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:55,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906776012] [2024-10-10 22:06:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:55,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-10 22:06:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-10 22:06:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-10 22:06:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-10 22:06:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906776012] [2024-10-10 22:06:56,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906776012] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403670341] [2024-10-10 22:06:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:56,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:56,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:56,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:56,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:06:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 22:06:56,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:56,178 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-10 22:06:56,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:06:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-10 22:06:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403670341] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:06:56,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:06:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-10-10 22:06:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664774387] [2024-10-10 22:06:56,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:06:56,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 22:06:56,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:56,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 22:06:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:06:56,232 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2024-10-10 22:06:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:56,265 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-10-10 22:06:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 22:06:56,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 30 [2024-10-10 22:06:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:56,268 INFO L225 Difference]: With dead ends: 42 [2024-10-10 22:06:56,268 INFO L226 Difference]: Without dead ends: 24 [2024-10-10 22:06:56,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 22:06:56,269 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:56,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-10 22:06:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-10 22:06:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2024-10-10 22:06:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-10 22:06:56,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2024-10-10 22:06:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:56,282 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-10 22:06:56,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2024-10-10 22:06:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-10 22:06:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-10 22:06:56,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:56,283 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:56,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 22:06:56,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:56,484 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:56,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1621992672, now seen corresponding path program 2 times [2024-10-10 22:06:56,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:56,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608194151] [2024-10-10 22:06:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:56,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-10 22:06:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-10 22:06:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-10 22:06:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-10 22:06:56,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:56,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608194151] [2024-10-10 22:06:56,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608194151] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:56,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957398028] [2024-10-10 22:06:56,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:06:56,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:56,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:56,608 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:56,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:06:56,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:06:56,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:06:56,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:06:56,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-10 22:06:56,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:06:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-10 22:06:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957398028] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:06:56,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:06:56,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2024-10-10 22:06:56,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558688882] [2024-10-10 22:06:56,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:06:56,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 22:06:56,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:56,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 22:06:56,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 22:06:56,812 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2024-10-10 22:06:56,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:56,844 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2024-10-10 22:06:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 22:06:56,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 33 [2024-10-10 22:06:56,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:56,846 INFO L225 Difference]: With dead ends: 49 [2024-10-10 22:06:56,846 INFO L226 Difference]: Without dead ends: 31 [2024-10-10 22:06:56,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 22:06:56,848 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:56,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-10 22:06:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-10 22:06:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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) [2024-10-10 22:06:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-10-10 22:06:56,857 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 33 [2024-10-10 22:06:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:56,858 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-10-10 22:06:56,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2024-10-10 22:06:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-10-10 22:06:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-10 22:06:56,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:56,860 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:56,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:06:57,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-10 22:06:57,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:57,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:57,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1372615532, now seen corresponding path program 3 times [2024-10-10 22:06:57,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:57,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567398388] [2024-10-10 22:06:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:57,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 22:06:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-10 22:06:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-10 22:06:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-10 22:06:57,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:57,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567398388] [2024-10-10 22:06:57,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567398388] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:57,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680440080] [2024-10-10 22:06:57,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:06:57,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:57,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:57,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:57,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 22:06:57,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:06:57,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:06:57,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:06:57,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 22:06:57,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:06:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 22:06:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680440080] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:06:57,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:06:57,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-10-10 22:06:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934621178] [2024-10-10 22:06:57,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:06:57,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 22:06:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 22:06:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:06:57,356 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:06:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:57,414 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2024-10-10 22:06:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-10 22:06:57,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 1 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 42 [2024-10-10 22:06:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:57,416 INFO L225 Difference]: With dead ends: 53 [2024-10-10 22:06:57,416 INFO L226 Difference]: Without dead ends: 36 [2024-10-10 22:06:57,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:06:57,417 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:57,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-10 22:06:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-10-10 22:06:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 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) [2024-10-10 22:06:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-10-10 22:06:57,429 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 42 [2024-10-10 22:06:57,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:57,429 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-10-10 22:06:57,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-10 22:06:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-10-10 22:06:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-10 22:06:57,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:57,433 INFO L215 NwaCegarLoop]: trace histogram [18, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:57,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-10 22:06:57,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:57,634 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:57,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1486823267, now seen corresponding path program 4 times [2024-10-10 22:06:57,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:57,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688249961] [2024-10-10 22:06:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:57,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 22:06:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-10 22:06:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-10 22:06:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-10 22:06:57,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688249961] [2024-10-10 22:06:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688249961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107162409] [2024-10-10 22:06:57,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:06:57,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:57,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:57,898 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:57,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 22:06:58,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:06:58,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:06:58,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 22:06:58,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-10 22:06:58,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:06:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-10 22:06:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107162409] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:06:58,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:06:58,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-10-10 22:06:58,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950798825] [2024-10-10 22:06:58,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:06:58,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-10 22:06:58,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-10 22:06:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-10 22:06:58,289 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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) [2024-10-10 22:06:58,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:58,342 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-10-10 22:06:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-10 22:06:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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 55 [2024-10-10 22:06:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:58,344 INFO L225 Difference]: With dead ends: 72 [2024-10-10 22:06:58,344 INFO L226 Difference]: Without dead ends: 48 [2024-10-10 22:06:58,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-10 22:06:58,345 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:58,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-10 22:06:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-10 22:06:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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) [2024-10-10 22:06:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-10-10 22:06:58,354 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 55 [2024-10-10 22:06:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:58,355 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-10-10 22:06:58,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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) [2024-10-10 22:06:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-10-10 22:06:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-10 22:06:58,356 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:58,356 INFO L215 NwaCegarLoop]: trace histogram [22, 18, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:58,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 22:06:58,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 22:06:58,557 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:06:58,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:06:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash -795614685, now seen corresponding path program 5 times [2024-10-10 22:06:58,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:06:58,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489671189] [2024-10-10 22:06:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:06:58,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:06:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:59,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-10 22:06:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:59,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-10 22:06:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:59,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-10 22:06:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:06:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-10 22:06:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:06:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489671189] [2024-10-10 22:06:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489671189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:06:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405878861] [2024-10-10 22:06:59,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:06:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:06:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:06:59,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:06:59,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 22:06:59,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-10 22:06:59,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:06:59,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:06:59,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:06:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 104 proven. 3 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-10-10 22:06:59,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:06:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2024-10-10 22:06:59,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405878861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:06:59,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:06:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-10-10 22:06:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390927538] [2024-10-10 22:06:59,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:06:59,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-10 22:06:59,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:06:59,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-10 22:06:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2024-10-10 22:06:59,856 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 22:06:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:06:59,905 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2024-10-10 22:06:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-10 22:06:59,907 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2024-10-10 22:06:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:06:59,908 INFO L225 Difference]: With dead ends: 77 [2024-10-10 22:06:59,908 INFO L226 Difference]: Without dead ends: 53 [2024-10-10 22:06:59,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2024-10-10 22:06:59,909 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:06:59,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:06:59,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-10 22:06:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-10 22:06:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 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) [2024-10-10 22:06:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-10-10 22:06:59,916 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 67 [2024-10-10 22:06:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:06:59,916 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-10-10 22:06:59,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 31 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 22:06:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-10-10 22:06:59,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-10 22:06:59,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:06:59,917 INFO L215 NwaCegarLoop]: trace histogram [23, 18, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:06:59,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-10 22:07:00,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:00,118 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:07:00,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:07:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash -566359460, now seen corresponding path program 6 times [2024-10-10 22:07:00,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:07:00,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733720236] [2024-10-10 22:07:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:07:00,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:07:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:00,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-10 22:07:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:00,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-10 22:07:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:00,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-10 22:07:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-10-10 22:07:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:07:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733720236] [2024-10-10 22:07:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733720236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:07:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986565945] [2024-10-10 22:07:00,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:07:00,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:00,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:07:00,833 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:07:00,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 22:07:01,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-10 22:07:01,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:07:01,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:07:01,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:07:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-10-10 22:07:01,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:07:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 102 proven. 21 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-10-10 22:07:01,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986565945] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:07:01,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:07:01,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 9, 9] total 40 [2024-10-10 22:07:01,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707647702] [2024-10-10 22:07:01,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:07:01,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-10 22:07:01,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:07:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-10 22:07:01,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1116, Unknown=0, NotChecked=0, Total=1560 [2024-10-10 22:07:01,396 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 22:07:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:07:01,467 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2024-10-10 22:07:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-10 22:07:01,468 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-10-10 22:07:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:07:01,469 INFO L225 Difference]: With dead ends: 90 [2024-10-10 22:07:01,469 INFO L226 Difference]: Without dead ends: 62 [2024-10-10 22:07:01,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=444, Invalid=1116, Unknown=0, NotChecked=0, Total=1560 [2024-10-10 22:07:01,471 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:07:01,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:07:01,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-10 22:07:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-10 22:07:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 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) [2024-10-10 22:07:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2024-10-10 22:07:01,477 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 72 [2024-10-10 22:07:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:07:01,478 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2024-10-10 22:07:01,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-10 22:07:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2024-10-10 22:07:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-10 22:07:01,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:07:01,479 INFO L215 NwaCegarLoop]: trace histogram [42, 24, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:07:01,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 22:07:01,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 22:07:01,680 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:07:01,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:07:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash 206445699, now seen corresponding path program 7 times [2024-10-10 22:07:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:07:01,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232709819] [2024-10-10 22:07:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:07:01,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:07:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:02,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-10 22:07:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:02,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-10 22:07:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:02,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-10 22:07:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-10 22:07:02,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:07:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232709819] [2024-10-10 22:07:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232709819] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:07:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545215803] [2024-10-10 22:07:02,535 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 22:07:02,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:02,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:07:02,537 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:07:02,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 22:07:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:02,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-10 22:07:02,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:07:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-10 22:07:02,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:07:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-10 22:07:03,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545215803] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:07:03,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:07:03,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 27] total 53 [2024-10-10 22:07:03,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720099221] [2024-10-10 22:07:03,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:07:03,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-10 22:07:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:07:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-10 22:07:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-10-10 22:07:03,620 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 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) [2024-10-10 22:07:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:07:03,700 INFO L93 Difference]: Finished difference Result 124 states and 157 transitions. [2024-10-10 22:07:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-10 22:07:03,701 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 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 97 [2024-10-10 22:07:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:07:03,702 INFO L225 Difference]: With dead ends: 124 [2024-10-10 22:07:03,702 INFO L226 Difference]: Without dead ends: 88 [2024-10-10 22:07:03,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2024-10-10 22:07:03,704 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:07:03,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:07:03,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-10 22:07:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-10 22:07:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 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) [2024-10-10 22:07:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2024-10-10 22:07:03,711 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 97 [2024-10-10 22:07:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:07:03,712 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2024-10-10 22:07:03,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 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) [2024-10-10 22:07:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2024-10-10 22:07:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-10 22:07:03,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:07:03,718 INFO L215 NwaCegarLoop]: trace histogram [50, 42, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:07:03,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 22:07:03,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 22:07:03,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:07:03,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:07:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash -694462173, now seen corresponding path program 8 times [2024-10-10 22:07:03,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:07:03,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668406549] [2024-10-10 22:07:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:07:03,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:07:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:06,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-10 22:07:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:06,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-10 22:07:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:06,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-10 22:07:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-10 22:07:06,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:07:06,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668406549] [2024-10-10 22:07:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668406549] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:07:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961986827] [2024-10-10 22:07:06,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:07:06,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:06,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:07:06,100 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:07:06,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 22:07:06,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:07:06,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:07:06,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-10 22:07:06,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:07:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-10 22:07:06,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:07:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-10-10 22:07:09,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961986827] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:07:09,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:07:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 53] total 103 [2024-10-10 22:07:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791691274] [2024-10-10 22:07:09,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:07:09,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-10-10 22:07:09,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:07:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-10-10 22:07:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-10-10 22:07:09,067 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 103 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 103 states have internal predecessors, (122), 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) [2024-10-10 22:07:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:07:09,210 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2024-10-10 22:07:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-10-10 22:07:09,211 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 103 states have internal predecessors, (122), 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 123 [2024-10-10 22:07:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:07:09,212 INFO L225 Difference]: With dead ends: 174 [2024-10-10 22:07:09,212 INFO L226 Difference]: Without dead ends: 138 [2024-10-10 22:07:09,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-10-10 22:07:09,217 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:07:09,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:07:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-10-10 22:07:09,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-10-10 22:07:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 133 states have internal predecessors, (136), 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) [2024-10-10 22:07:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2024-10-10 22:07:09,238 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 123 [2024-10-10 22:07:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:07:09,239 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2024-10-10 22:07:09,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 103 states have internal predecessors, (122), 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) [2024-10-10 22:07:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2024-10-10 22:07:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-10 22:07:09,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:07:09,245 INFO L215 NwaCegarLoop]: trace histogram [100, 42, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:07:09,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-10 22:07:09,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:09,446 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:07:09,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:07:09,447 INFO L85 PathProgramCache]: Analyzing trace with hash 764728131, now seen corresponding path program 9 times [2024-10-10 22:07:09,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:07:09,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098364358] [2024-10-10 22:07:09,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:07:09,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:07:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:09,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-10 22:07:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:09,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-10 22:07:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:09,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-10 22:07:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6070 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6049 trivial. 0 not checked. [2024-10-10 22:07:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:07:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098364358] [2024-10-10 22:07:09,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098364358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:07:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147456608] [2024-10-10 22:07:09,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:07:09,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:09,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:07:09,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:07:09,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 22:07:10,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-10 22:07:10,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:07:10,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 22:07:10,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:07:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6070 backedges. 456 proven. 21 refuted. 0 times theorem prover too weak. 5593 trivial. 0 not checked. [2024-10-10 22:07:10,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:07:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6070 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6049 trivial. 0 not checked. [2024-10-10 22:07:10,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147456608] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:07:10,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:07:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-10-10 22:07:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835211240] [2024-10-10 22:07:10,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:07:10,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 22:07:10,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:07:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 22:07:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:07:10,341 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2024-10-10 22:07:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:07:10,377 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2024-10-10 22:07:10,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-10 22:07:10,377 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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 173 [2024-10-10 22:07:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:07:10,379 INFO L225 Difference]: With dead ends: 170 [2024-10-10 22:07:10,379 INFO L226 Difference]: Without dead ends: 146 [2024-10-10 22:07:10,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-10-10 22:07:10,380 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:07:10,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:07:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-10 22:07:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-10-10 22:07:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.0212765957446808) internal successors, (144), 141 states have internal predecessors, (144), 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) [2024-10-10 22:07:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2024-10-10 22:07:10,400 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 173 [2024-10-10 22:07:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:07:10,400 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2024-10-10 22:07:10,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2024-10-10 22:07:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2024-10-10 22:07:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-10 22:07:10,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:07:10,405 INFO L215 NwaCegarLoop]: trace histogram [100, 42, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:07:10,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-10 22:07:10,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:10,606 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:07:10,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:07:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash -540002365, now seen corresponding path program 10 times [2024-10-10 22:07:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:07:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184737323] [2024-10-10 22:07:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:07:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:07:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:11,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-10 22:07:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:11,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-10 22:07:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:11,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-10 22:07:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6154 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 6049 trivial. 0 not checked. [2024-10-10 22:07:11,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:07:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184737323] [2024-10-10 22:07:11,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184737323] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:07:11,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309920079] [2024-10-10 22:07:11,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:07:11,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:11,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:07:11,365 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:07:11,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-10 22:07:11,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:07:11,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:07:11,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 22:07:11,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:07:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6154 backedges. 452 proven. 105 refuted. 0 times theorem prover too weak. 5597 trivial. 0 not checked. [2024-10-10 22:07:11,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:07:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6154 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 5595 trivial. 0 not checked. [2024-10-10 22:07:12,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309920079] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:07:12,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:07:12,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2024-10-10 22:07:12,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086000189] [2024-10-10 22:07:12,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:07:12,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-10 22:07:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:07:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-10 22:07:12,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=1531, Unknown=0, NotChecked=0, Total=2162 [2024-10-10 22:07:12,363 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 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) [2024-10-10 22:07:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:07:12,447 INFO L93 Difference]: Finished difference Result 205 states and 231 transitions. [2024-10-10 22:07:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-10 22:07:12,447 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 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 181 [2024-10-10 22:07:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:07:12,449 INFO L225 Difference]: With dead ends: 205 [2024-10-10 22:07:12,449 INFO L226 Difference]: Without dead ends: 163 [2024-10-10 22:07:12,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=631, Invalid=1531, Unknown=0, NotChecked=0, Total=2162 [2024-10-10 22:07:12,450 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:07:12,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:07:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-10 22:07:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-10-10 22:07:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 158 states have (on average 1.018987341772152) internal successors, (161), 158 states have internal predecessors, (161), 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) [2024-10-10 22:07:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2024-10-10 22:07:12,470 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 181 [2024-10-10 22:07:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:07:12,470 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2024-10-10 22:07:12,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 47 states have internal predecessors, (69), 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) [2024-10-10 22:07:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2024-10-10 22:07:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-10-10 22:07:12,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:07:12,473 INFO L215 NwaCegarLoop]: trace histogram [100, 90, 15, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:07:12,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-10 22:07:12,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-10 22:07:12,678 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:07:12,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:07:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1108328724, now seen corresponding path program 11 times [2024-10-10 22:07:12,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:07:12,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652350288] [2024-10-10 22:07:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:07:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:07:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:13,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-10 22:07:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:13,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-10 22:07:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:13,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-10 22:07:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:07:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9457 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 9337 trivial. 0 not checked. [2024-10-10 22:07:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:07:13,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652350288] [2024-10-10 22:07:13,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652350288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:07:13,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390070983] [2024-10-10 22:07:13,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:07:13,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:07:13,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:07:13,595 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:07:13,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process