./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sep40-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/sep40-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f09ee736f3dbb8dbc36f75a04671608fd1c3014086677159a28111a32a84bd34 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:02:52,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:02:52,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:02:52,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:02:52,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:02:52,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:02:52,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:02:52,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:02:52,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:02:52,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:02:52,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:02:52,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:02:52,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:02:52,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:02:52,587 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:02:52,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:02:52,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:02:52,588 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:02:52,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:02:52,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:02:52,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:02:52,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:02:52,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:02:52,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:02:52,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:02:52,595 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:02:52,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:02:52,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:02:52,595 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:02:52,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:02:52,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:02:52,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:02:52,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:02:52,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:02:52,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:02:52,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:02:52,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:02:52,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:02:52,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:02:52,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:02:52,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:02:52,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:02:52,603 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f09ee736f3dbb8dbc36f75a04671608fd1c3014086677159a28111a32a84bd34 [2024-11-09 18:02:52,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:02:52,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:02:52,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:02:52,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:02:52,868 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:02:52,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep40-1.i [2024-11-09 18:02:54,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:02:54,555 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:02:54,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep40-1.i [2024-11-09 18:02:54,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccb4ae67b/b6dd9e8ac8694ef6bcdf7db51b08339e/FLAG781be707e [2024-11-09 18:02:54,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccb4ae67b/b6dd9e8ac8694ef6bcdf7db51b08339e [2024-11-09 18:02:54,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:02:54,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:02:54,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:02:54,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:02:54,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:02:54,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:02:54" (1/1) ... [2024-11-09 18:02:54,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4581023a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:54, skipping insertion in model container [2024-11-09 18:02:54,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:02:54" (1/1) ... [2024-11-09 18:02:54,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:02:55,205 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep40-1.i[1293,1306] [2024-11-09 18:02:55,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:02:55,219 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:02:55,242 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep40-1.i[1293,1306] [2024-11-09 18:02:55,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:02:55,260 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:02:55,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55 WrapperNode [2024-11-09 18:02:55,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:02:55,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:02:55,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:02:55,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:02:55,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,294 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-09 18:02:55,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:02:55,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:02:55,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:02:55,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:02:55,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,316 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-09 18:02:55,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,322 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:02:55,326 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:02:55,327 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:02:55,327 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:02:55,327 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (1/1) ... [2024-11-09 18:02:55,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:02:55,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:55,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:02:55,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:02:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:02:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:02:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:02:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:02:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:02:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:02:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:02:55,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:02:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:02:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:02:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:02:55,409 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2024-11-09 18:02:55,409 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2024-11-09 18:02:55,511 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:02:55,513 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:02:55,638 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L31: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2024-11-09 18:02:55,673 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-09 18:02:55,673 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:02:55,688 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:02:55,688 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:02:55,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:02:55 BoogieIcfgContainer [2024-11-09 18:02:55,689 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:02:55,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:02:55,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:02:55,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:02:55,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:02:54" (1/3) ... [2024-11-09 18:02:55,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70485736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:02:55, skipping insertion in model container [2024-11-09 18:02:55,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:02:55" (2/3) ... [2024-11-09 18:02:55,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70485736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:02:55, skipping insertion in model container [2024-11-09 18:02:55,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:02:55" (3/3) ... [2024-11-09 18:02:55,697 INFO L112 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2024-11-09 18:02:55,709 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:02:55,709 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:02:55,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:02:55,759 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;@692888e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:02:55,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:02:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 18:02:55,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:55,769 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:55,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:55,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:55,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1661481438, now seen corresponding path program 1 times [2024-11-09 18:02:55,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:55,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731377508] [2024-11-09 18:02:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:55,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:55,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-09 18:02:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:55,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-09 18:02:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:55,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 18:02:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 18:02:55,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731377508] [2024-11-09 18:02:55,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731377508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:55,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:02:55,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:02:55,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476037274] [2024-11-09 18:02:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:55,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:02:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:02:55,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:02:55,990 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:56,006 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2024-11-09 18:02:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:02:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-09 18:02:56,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:56,016 INFO L225 Difference]: With dead ends: 54 [2024-11-09 18:02:56,017 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 18:02:56,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:02:56,025 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:56,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 18:02:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 18:02:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-09 18:02:56,059 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2024-11-09 18:02:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:56,060 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-09 18:02:56,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-09 18:02:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 18:02:56,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:56,062 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:56,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:02:56,063 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:56,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash -578091414, now seen corresponding path program 1 times [2024-11-09 18:02:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:56,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732390357] [2024-11-09 18:02:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:56,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 18:02:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:02:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 18:02:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:02:56,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732390357] [2024-11-09 18:02:56,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732390357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462115915] [2024-11-09 18:02:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:56,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:56,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:56,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:02:56,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:02:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:02:56,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:02:56,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:02:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462115915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:02:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:02:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495575005] [2024-11-09 18:02:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:56,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:02:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:02:56,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:56,482 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:56,496 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-09 18:02:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:02:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 34 [2024-11-09 18:02:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:56,498 INFO L225 Difference]: With dead ends: 48 [2024-11-09 18:02:56,498 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 18:02:56,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:56,501 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:56,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 18:02:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 18:02:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-09 18:02:56,512 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 34 [2024-11-09 18:02:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:56,512 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-09 18:02:56,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 18:02:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-09 18:02:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 18:02:56,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:56,514 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:56,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:02:56,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:56,720 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:56,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1001261655, now seen corresponding path program 1 times [2024-11-09 18:02:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752564869] [2024-11-09 18:02:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:02:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 18:02:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 18:02:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:02:56,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:56,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752564869] [2024-11-09 18:02:56,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752564869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:56,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973432601] [2024-11-09 18:02:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:56,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:56,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:56,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:02:56,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:02:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:56,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:02:57,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 18:02:57,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:02:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973432601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:57,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:02:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-11-09 18:02:57,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507791298] [2024-11-09 18:02:57,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:57,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:02:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:02:57,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:57,031 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:57,050 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2024-11-09 18:02:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:02:57,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 36 [2024-11-09 18:02:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:57,052 INFO L225 Difference]: With dead ends: 50 [2024-11-09 18:02:57,052 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 18:02:57,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:02:57,054 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:57,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 18:02:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-09 18:02:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-09 18:02:57,065 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 36 [2024-11-09 18:02:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:57,065 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-09 18:02:57,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-09 18:02:57,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 18:02:57,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:57,067 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:57,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:02:57,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 18:02:57,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:57,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:57,273 INFO L85 PathProgramCache]: Analyzing trace with hash -387340437, now seen corresponding path program 1 times [2024-11-09 18:02:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:57,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935072255] [2024-11-09 18:02:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:02:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 18:02:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 18:02:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:02:57,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935072255] [2024-11-09 18:02:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935072255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472471570] [2024-11-09 18:02:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:57,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:57,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:57,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:02:57,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:02:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:02:57,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:02:57,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:02:57,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472471570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:02:57,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:02:57,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 18:02:57,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363304615] [2024-11-09 18:02:57,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:02:57,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:02:57,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:57,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:02:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:02:57,519 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:57,531 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-09 18:02:57,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:02:57,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 48 [2024-11-09 18:02:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:57,532 INFO L225 Difference]: With dead ends: 47 [2024-11-09 18:02:57,532 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 18:02:57,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:02:57,536 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:57,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 18:02:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 18:02:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-09 18:02:57,545 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 48 [2024-11-09 18:02:57,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:57,546 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-09 18:02:57,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 18:02:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-09 18:02:57,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 18:02:57,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:57,549 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:57,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:02:57,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:57,752 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:57,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash 544748460, now seen corresponding path program 1 times [2024-11-09 18:02:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:57,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494666010] [2024-11-09 18:02:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:57,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 18:02:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 18:02:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 18:02:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:02:57,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494666010] [2024-11-09 18:02:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494666010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923557467] [2024-11-09 18:02:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:57,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:57,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:57,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:02:57,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:02:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:57,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:02:57,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:02:58,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-09 18:02:58,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923557467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:58,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:58,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-09 18:02:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382573439] [2024-11-09 18:02:58,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:58,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 18:02:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:58,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 18:02:58,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:02:58,065 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:02:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:58,096 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-11-09 18:02:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:02:58,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 50 [2024-11-09 18:02:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:58,100 INFO L225 Difference]: With dead ends: 68 [2024-11-09 18:02:58,101 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 18:02:58,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 18:02:58,102 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:58,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 102 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 18:02:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-09 18:02:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-09 18:02:58,111 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 50 [2024-11-09 18:02:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:58,111 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-09 18:02:58,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:02:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-09 18:02:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 18:02:58,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:58,113 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:58,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:02:58,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:58,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:58,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:58,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1763297771, now seen corresponding path program 2 times [2024-11-09 18:02:58,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:58,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363623387] [2024-11-09 18:02:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:58,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:58,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 18:02:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:58,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 18:02:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:58,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 18:02:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-09 18:02:58,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363623387] [2024-11-09 18:02:58,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363623387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252303174] [2024-11-09 18:02:58,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:02:58,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:58,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:58,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:02:58,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:02:58,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:02:58,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:58,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:02:58,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 18:02:58,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 18:02:58,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252303174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:58,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:58,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-09 18:02:58,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070998921] [2024-11-09 18:02:58,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:58,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 18:02:58,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:58,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 18:02:58,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:02:58,776 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 18:02:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:58,822 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2024-11-09 18:02:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 18:02:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-09 18:02:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:58,825 INFO L225 Difference]: With dead ends: 84 [2024-11-09 18:02:58,825 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 18:02:58,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-09 18:02:58,826 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:58,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 18:02:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-09 18:02:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2024-11-09 18:02:58,833 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 68 [2024-11-09 18:02:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:58,834 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2024-11-09 18:02:58,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 18:02:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2024-11-09 18:02:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 18:02:58,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:58,836 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:58,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:02:59,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:59,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:59,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1011082086, now seen corresponding path program 3 times [2024-11-09 18:02:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50379889] [2024-11-09 18:02:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:59,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-09 18:02:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:59,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-09 18:02:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:59,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 18:02:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:02:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 18:02:59,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:02:59,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50379889] [2024-11-09 18:02:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50379889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:02:59,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154852766] [2024-11-09 18:02:59,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:02:59,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:59,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:02:59,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:02:59,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:02:59,494 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 18:02:59,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:02:59,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:02:59,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:02:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-09 18:02:59,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:02:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-09 18:02:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154852766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:02:59,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:02:59,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-09 18:02:59,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570464435] [2024-11-09 18:02:59,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:02:59,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:02:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:02:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:02:59,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:02:59,627 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 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) [2024-11-09 18:02:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:02:59,691 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2024-11-09 18:02:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 18:02:59,691 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 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 82 [2024-11-09 18:02:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:02:59,692 INFO L225 Difference]: With dead ends: 104 [2024-11-09 18:02:59,692 INFO L226 Difference]: Without dead ends: 73 [2024-11-09 18:02:59,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:02:59,693 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:02:59,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 188 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:02:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-09 18:02:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-09 18:02:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:02:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2024-11-09 18:02:59,708 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 82 [2024-11-09 18:02:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:02:59,708 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2024-11-09 18:02:59,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 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) [2024-11-09 18:02:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2024-11-09 18:02:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-09 18:02:59,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:02:59,712 INFO L215 NwaCegarLoop]: trace histogram [21, 18, 18, 18, 12, 11, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:02:59,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:02:59,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:02:59,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:02:59,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:02:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2059234733, now seen corresponding path program 4 times [2024-11-09 18:02:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:02:59,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046006293] [2024-11-09 18:02:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:02:59,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:02:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:00,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 18:03:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:00,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-09 18:03:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:00,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-09 18:03:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2024-11-09 18:03:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046006293] [2024-11-09 18:03:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046006293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627161085] [2024-11-09 18:03:00,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:03:00,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:00,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:00,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:03:00,472 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:03:00,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:03:00,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:03:00,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:03:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 342 proven. 72 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-09 18:03:00,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:03:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 418 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-11-09 18:03:00,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627161085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:03:00,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:03:00,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-11-09 18:03:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448578653] [2024-11-09 18:03:00,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:03:00,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 18:03:00,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:03:00,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 18:03:00,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:03:00,775 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 28 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:03:00,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:03:00,853 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2024-11-09 18:03:00,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 18:03:00,854 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 28 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 132 [2024-11-09 18:03:00,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:03:00,856 INFO L225 Difference]: With dead ends: 154 [2024-11-09 18:03:00,856 INFO L226 Difference]: Without dead ends: 107 [2024-11-09 18:03:00,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-09 18:03:00,857 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:03:00,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 236 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:03:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-09 18:03:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-09 18:03:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 102 states have internal predecessors, (119), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:03:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2024-11-09 18:03:00,866 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 132 [2024-11-09 18:03:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:03:00,867 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2024-11-09 18:03:00,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 28 states have internal predecessors, (111), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:03:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2024-11-09 18:03:00,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-09 18:03:00,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:03:00,870 INFO L215 NwaCegarLoop]: trace histogram [45, 42, 42, 42, 13, 12, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:03:00,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:03:01,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:01,071 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:03:01,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:03:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash -557434052, now seen corresponding path program 5 times [2024-11-09 18:03:01,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:03:01,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8320527] [2024-11-09 18:03:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:03:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:03:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:01,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 18:03:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:01,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-09 18:03:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:01,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-09 18:03:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2024-11-09 18:03:01,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:01,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8320527] [2024-11-09 18:03:01,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8320527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:01,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69625818] [2024-11-09 18:03:01,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:03:01,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:01,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:01,785 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:01,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:03:02,323 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-09 18:03:02,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:03:02,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:03:02,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:03:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 1686 proven. 392 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2024-11-09 18:03:02,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:03:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 2082 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2024-11-09 18:03:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69625818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:03:03,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:03:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 45 [2024-11-09 18:03:03,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213998218] [2024-11-09 18:03:03,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:03:03,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-09 18:03:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:03:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-09 18:03:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 18:03:03,212 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 45 states, 45 states have (on average 3.933333333333333) internal successors, (177), 45 states have internal predecessors, (177), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:03:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:03:03,365 INFO L93 Difference]: Finished difference Result 252 states and 323 transitions. [2024-11-09 18:03:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 18:03:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.933333333333333) internal successors, (177), 45 states have internal predecessors, (177), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 230 [2024-11-09 18:03:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:03:03,368 INFO L225 Difference]: With dead ends: 252 [2024-11-09 18:03:03,368 INFO L226 Difference]: Without dead ends: 173 [2024-11-09 18:03:03,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 18:03:03,370 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 83 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:03:03,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 281 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:03:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-09 18:03:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-09 18:03:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.1964285714285714) internal successors, (201), 168 states have internal predecessors, (201), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:03:03,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 207 transitions. [2024-11-09 18:03:03,388 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 207 transitions. Word has length 230 [2024-11-09 18:03:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:03:03,389 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 207 transitions. [2024-11-09 18:03:03,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.933333333333333) internal successors, (177), 45 states have internal predecessors, (177), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:03:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 207 transitions. [2024-11-09 18:03:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-09 18:03:03,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:03:03,403 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 14, 13, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:03:03,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:03:03,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 18:03:03,604 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:03:03,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:03:03,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1821954277, now seen corresponding path program 6 times [2024-11-09 18:03:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:03:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583548111] [2024-11-09 18:03:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:03:03,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:03:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:04,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 18:03:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:04,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-09 18:03:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:04,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-11-09 18:03:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16766 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16584 trivial. 0 not checked. [2024-11-09 18:03:04,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:04,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583548111] [2024-11-09 18:03:04,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583548111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:04,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659687035] [2024-11-09 18:03:04,643 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:03:04,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:04,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:04,645 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:04,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:03:04,851 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 18:03:04,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:03:04,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:03:04,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:03:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16766 backedges. 7452 proven. 6 refuted. 0 times theorem prover too weak. 9308 trivial. 0 not checked. [2024-11-09 18:03:04,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:03:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16766 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16760 trivial. 0 not checked. [2024-11-09 18:03:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659687035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:03:04,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:03:04,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 22 [2024-11-09 18:03:04,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977279784] [2024-11-09 18:03:04,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:03:04,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 18:03:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:03:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 18:03:04,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-11-09 18:03:04,980 INFO L87 Difference]: Start difference. First operand 173 states and 207 transitions. Second operand has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 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) [2024-11-09 18:03:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:03:05,022 INFO L93 Difference]: Finished difference Result 326 states and 398 transitions. [2024-11-09 18:03:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 18:03:05,023 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 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 424 [2024-11-09 18:03:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:03:05,024 INFO L225 Difference]: With dead ends: 326 [2024-11-09 18:03:05,024 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 18:03:05,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-11-09 18:03:05,026 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:03:05,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:03:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 18:03:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-09 18:03:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.1853932584269662) internal successors, (211), 178 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:03:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 217 transitions. [2024-11-09 18:03:05,047 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 217 transitions. Word has length 424 [2024-11-09 18:03:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:03:05,048 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 217 transitions. [2024-11-09 18:03:05,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 22 states have internal predecessors, (76), 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) [2024-11-09 18:03:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 217 transitions. [2024-11-09 18:03:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-09 18:03:05,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:03:05,055 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 15, 14, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:03:05,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:03:05,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 18:03:05,260 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:03:05,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:03:05,261 INFO L85 PathProgramCache]: Analyzing trace with hash 630912926, now seen corresponding path program 7 times [2024-11-09 18:03:05,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:03:05,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778538243] [2024-11-09 18:03:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:03:05,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:03:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:06,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 18:03:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:06,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-09 18:03:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:06,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-11-09 18:03:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16830 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-09 18:03:06,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778538243] [2024-11-09 18:03:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778538243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516692621] [2024-11-09 18:03:06,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:03:06,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:06,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:06,326 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:06,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:03:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:06,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 18:03:06,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:03:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16830 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-09 18:03:06,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:03:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16830 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-09 18:03:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516692621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:03:07,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:03:07,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-09 18:03:07,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542131204] [2024-11-09 18:03:07,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:03:07,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 18:03:07,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:03:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 18:03:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 18:03:07,141 INFO L87 Difference]: Start difference. First operand 183 states and 217 transitions. Second operand has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:03:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:03:07,178 INFO L93 Difference]: Finished difference Result 366 states and 449 transitions. [2024-11-09 18:03:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 18:03:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 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 434 [2024-11-09 18:03:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:03:07,180 INFO L225 Difference]: With dead ends: 366 [2024-11-09 18:03:07,180 INFO L226 Difference]: Without dead ends: 215 [2024-11-09 18:03:07,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 18:03:07,182 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:03:07,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:03:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-09 18:03:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-11-09 18:03:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.1571428571428573) internal successors, (243), 210 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:03:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 249 transitions. [2024-11-09 18:03:07,196 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 249 transitions. Word has length 434 [2024-11-09 18:03:07,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:03:07,196 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 249 transitions. [2024-11-09 18:03:07,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:03:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 249 transitions. [2024-11-09 18:03:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-09 18:03:07,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:03:07,202 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 31, 30, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:03:07,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 18:03:07,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 18:03:07,404 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:03:07,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:03:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1651193458, now seen corresponding path program 8 times [2024-11-09 18:03:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:03:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173779944] [2024-11-09 18:03:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:03:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:03:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:09,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 18:03:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:09,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-11-09 18:03:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:09,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-09 18:03:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 17550 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-09 18:03:09,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173779944] [2024-11-09 18:03:09,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173779944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:09,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915123953] [2024-11-09 18:03:09,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:03:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:09,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:09,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:03:09,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:03:09,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:03:09,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 18:03:09,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:03:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 17550 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-09 18:03:09,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:03:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17550 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-09 18:03:10,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915123953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:03:10,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:03:10,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2024-11-09 18:03:10,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864829964] [2024-11-09 18:03:10,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:03:10,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 18:03:10,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:03:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 18:03:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 18:03:10,701 INFO L87 Difference]: Start difference. First operand 215 states and 249 transitions. Second operand has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 43 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:03:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:03:10,750 INFO L93 Difference]: Finished difference Result 386 states and 463 transitions. [2024-11-09 18:03:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 18:03:10,750 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 43 states have internal predecessors, (113), 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 466 [2024-11-09 18:03:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:03:10,752 INFO L225 Difference]: With dead ends: 386 [2024-11-09 18:03:10,752 INFO L226 Difference]: Without dead ends: 235 [2024-11-09 18:03:10,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 906 SyntacticMatches, 22 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 18:03:10,754 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:03:10,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:03:10,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-09 18:03:10,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-09 18:03:10,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 230 states have (on average 1.1434782608695653) internal successors, (263), 230 states have internal predecessors, (263), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:03:10,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 269 transitions. [2024-11-09 18:03:10,762 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 269 transitions. Word has length 466 [2024-11-09 18:03:10,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:03:10,762 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 269 transitions. [2024-11-09 18:03:10,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.627906976744186) internal successors, (113), 43 states have internal predecessors, (113), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 18:03:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 269 transitions. [2024-11-09 18:03:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-09 18:03:10,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:03:10,770 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 41, 40, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:03:10,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 18:03:10,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:03:10,971 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:03:10,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:03:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1522844996, now seen corresponding path program 9 times [2024-11-09 18:03:10,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:03:10,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301591297] [2024-11-09 18:03:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:03:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:03:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:12,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:03:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:13,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-11-09 18:03:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:13,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-11-09 18:03:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18260 backedges. 0 proven. 9250 refuted. 0 times theorem prover too weak. 9010 trivial. 0 not checked. [2024-11-09 18:03:13,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301591297] [2024-11-09 18:03:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301591297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357379780] [2024-11-09 18:03:13,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:03:13,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:13,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:13,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:13,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 18:03:13,836 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 18:03:13,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:03:13,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:03:13,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:03:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18260 backedges. 7452 proven. 42 refuted. 0 times theorem prover too weak. 10766 trivial. 0 not checked. [2024-11-09 18:03:14,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:03:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18260 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18218 trivial. 0 not checked. [2024-11-09 18:03:14,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357379780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:03:14,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:03:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2024-11-09 18:03:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237631608] [2024-11-09 18:03:14,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:03:14,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-09 18:03:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:03:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-09 18:03:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 18:03:14,217 INFO L87 Difference]: Start difference. First operand 235 states and 269 transitions. Second operand has 47 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 47 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:03:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:03:14,359 INFO L93 Difference]: Finished difference Result 406 states and 486 transitions. [2024-11-09 18:03:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-09 18:03:14,360 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 47 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 486 [2024-11-09 18:03:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:03:14,362 INFO L225 Difference]: With dead ends: 406 [2024-11-09 18:03:14,362 INFO L226 Difference]: Without dead ends: 257 [2024-11-09 18:03:14,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 964 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 18:03:14,366 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 89 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:03:14,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 304 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:03:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-09 18:03:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2024-11-09 18:03:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.136) internal successors, (284), 250 states have internal predecessors, (284), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:03:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 290 transitions. [2024-11-09 18:03:14,375 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 290 transitions. Word has length 486 [2024-11-09 18:03:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:03:14,376 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 290 transitions. [2024-11-09 18:03:14,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.9361702127659575) internal successors, (185), 47 states have internal predecessors, (185), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 18:03:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 290 transitions. [2024-11-09 18:03:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-09 18:03:14,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:03:14,379 INFO L215 NwaCegarLoop]: trace histogram [96, 93, 93, 93, 41, 40, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:03:14,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 18:03:14,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:03:14,580 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:03:14,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:03:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1473285234, now seen corresponding path program 10 times [2024-11-09 18:03:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:03:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067206206] [2024-11-09 18:03:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:03:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:03:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:16,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:03:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:16,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-11-09 18:03:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:16,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-11-09 18:03:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19538 backedges. 0 proven. 9868 refuted. 0 times theorem prover too weak. 9670 trivial. 0 not checked. [2024-11-09 18:03:16,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:16,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067206206] [2024-11-09 18:03:16,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067206206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:16,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140877349] [2024-11-09 18:03:16,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:03:16,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:16,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:16,901 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:16,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 18:03:17,375 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:03:17,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:03:17,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 18:03:17,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:03:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 19538 backedges. 7942 proven. 1922 refuted. 0 times theorem prover too weak. 9674 trivial. 0 not checked. [2024-11-09 18:03:17,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:03:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 19538 backedges. 0 proven. 9868 refuted. 0 times theorem prover too weak. 9670 trivial. 0 not checked. [2024-11-09 18:03:18,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140877349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:03:18,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:03:18,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 42 [2024-11-09 18:03:18,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292742794] [2024-11-09 18:03:18,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:03:18,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 18:03:18,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:03:18,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 18:03:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 18:03:18,343 INFO L87 Difference]: Start difference. First operand 255 states and 290 transitions. Second operand has 42 states, 42 states have (on average 4.571428571428571) internal successors, (192), 42 states have internal predecessors, (192), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 18:03:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:03:18,472 INFO L93 Difference]: Finished difference Result 460 states and 549 transitions. [2024-11-09 18:03:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 18:03:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.571428571428571) internal successors, (192), 42 states have internal predecessors, (192), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 514 [2024-11-09 18:03:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:03:18,474 INFO L225 Difference]: With dead ends: 460 [2024-11-09 18:03:18,475 INFO L226 Difference]: Without dead ends: 291 [2024-11-09 18:03:18,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 1002 SyntacticMatches, 24 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 18:03:18,476 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 118 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:03:18,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 278 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:03:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-09 18:03:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-11-09 18:03:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 286 states have (on average 1.1503496503496504) internal successors, (329), 286 states have internal predecessors, (329), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 18:03:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 335 transitions. [2024-11-09 18:03:18,484 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 335 transitions. Word has length 514 [2024-11-09 18:03:18,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:03:18,484 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 335 transitions. [2024-11-09 18:03:18,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.571428571428571) internal successors, (192), 42 states have internal predecessors, (192), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 18:03:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 335 transitions. [2024-11-09 18:03:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-11-09 18:03:18,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:03:18,488 INFO L215 NwaCegarLoop]: trace histogram [123, 120, 120, 120, 41, 40, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:03:18,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 18:03:18,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:03:18,689 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:03:18,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:03:18,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2008256544, now seen corresponding path program 11 times [2024-11-09 18:03:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:03:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702988357] [2024-11-09 18:03:18,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:03:18,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:03:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:19,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 18:03:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:19,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-11-09 18:03:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:19,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2024-11-09 18:03:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:03:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 31148 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 30938 trivial. 0 not checked. [2024-11-09 18:03:19,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:03:19,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702988357] [2024-11-09 18:03:19,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702988357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:03:19,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265130648] [2024-11-09 18:03:19,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:03:19,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:03:19,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:03:19,960 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:03:19,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process