./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max60-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/max60-2.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 6dbb3c8dbc9ecf6e4f72a22b68126998e2267c3eb50185a59b3a9d03df64099d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:29:57,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:29:57,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:29:57,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:29:57,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:29:57,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:29:57,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:29:57,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:29:57,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:29:57,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:29:57,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:29:57,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:29:57,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:29:57,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:29:57,168 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:29:57,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:29:57,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:29:57,169 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:29:57,169 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:29:57,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:29:57,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:29:57,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:29:57,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:29:57,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:29:57,171 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:29:57,171 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:29:57,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:29:57,172 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:29:57,172 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:29:57,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:29:57,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:29:57,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:29:57,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:29:57,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:29:57,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:29:57,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:29:57,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:29:57,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:29:57,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:29:57,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:29:57,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:29:57,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:29:57,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dbb3c8dbc9ecf6e4f72a22b68126998e2267c3eb50185a59b3a9d03df64099d [2024-11-16 02:29:57,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:29:57,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:29:57,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:29:57,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:29:57,404 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:29:57,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max60-2.i [2024-11-16 02:29:58,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:29:58,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:29:58,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max60-2.i [2024-11-16 02:29:58,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9989660/55e30c8c4f7e4cfb92083afc3d8e9816/FLAG73d638fa2 [2024-11-16 02:29:58,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e9989660/55e30c8c4f7e4cfb92083afc3d8e9816 [2024-11-16 02:29:58,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:29:58,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:29:58,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:29:58,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:29:58,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:29:58,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:29:58" (1/1) ... [2024-11-16 02:29:58,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49338f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:58, skipping insertion in model container [2024-11-16 02:29:58,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:29:58" (1/1) ... [2024-11-16 02:29:58,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:29:59,149 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/max60-2.i[1290,1303] [2024-11-16 02:29:59,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:29:59,163 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:29:59,181 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/max60-2.i[1290,1303] [2024-11-16 02:29:59,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:29:59,210 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:29:59,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59 WrapperNode [2024-11-16 02:29:59,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:29:59,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:29:59,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:29:59,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:29:59,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,249 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-16 02:29:59,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:29:59,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:29:59,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:29:59,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:29:59,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,300 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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]. [2024-11-16 02:29:59,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,309 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:29:59,323 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:29:59,323 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:29:59,323 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:29:59,324 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (1/1) ... [2024-11-16 02:29:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:29:59,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:29:59,357 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) [2024-11-16 02:29:59,358 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 [2024-11-16 02:29:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:29:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-16 02:29:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-16 02:29:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:29:59,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:29:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:29:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:29:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:29:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:29:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:29:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:29:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:29:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:29:59,540 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:29:59,541 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:29:59,663 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2024-11-16 02:29:59,678 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-16 02:29:59,678 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:29:59,694 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:29:59,695 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:29:59,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:29:59 BoogieIcfgContainer [2024-11-16 02:29:59,695 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:29:59,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:29:59,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:29:59,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:29:59,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:29:58" (1/3) ... [2024-11-16 02:29:59,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9bdabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:29:59, skipping insertion in model container [2024-11-16 02:29:59,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:29:59" (2/3) ... [2024-11-16 02:29:59,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9bdabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:29:59, skipping insertion in model container [2024-11-16 02:29:59,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:29:59" (3/3) ... [2024-11-16 02:29:59,705 INFO L112 eAbstractionObserver]: Analyzing ICFG max60-2.i [2024-11-16 02:29:59,721 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:29:59,721 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:29:59,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:29:59,779 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;@5d99871a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:29:59,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:29:59,783 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) [2024-11-16 02:29:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 02:29:59,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:29:59,789 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] [2024-11-16 02:29:59,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:29:59,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:29:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash -55101014, now seen corresponding path program 1 times [2024-11-16 02:29:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:29:59,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318447172] [2024-11-16 02:29:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:29:59,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:29:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:29:59,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 02:29:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:29:59,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 02:29:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:29:59,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 02:29:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:29:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 02:29:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:29:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318447172] [2024-11-16 02:29:59,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318447172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:29:59,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:29:59,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:29:59,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162902753] [2024-11-16 02:29:59,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:29:59,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:29:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:30:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:30:00,005 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) [2024-11-16 02:30:00,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:00,022 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2024-11-16 02:30:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:30:00,024 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 [2024-11-16 02:30:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:00,029 INFO L225 Difference]: With dead ends: 54 [2024-11-16 02:30:00,029 INFO L226 Difference]: Without dead ends: 25 [2024-11-16 02:30:00,032 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 [2024-11-16 02:30:00,037 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 [2024-11-16 02:30:00,037 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] [2024-11-16 02:30:00,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-16 02:30:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-16 02:30:00,069 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) [2024-11-16 02:30:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-16 02:30:00,071 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2024-11-16 02:30:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:00,072 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-16 02:30:00,073 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) [2024-11-16 02:30:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-16 02:30:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:30:00,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:00,075 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] [2024-11-16 02:30:00,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:30:00,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:00,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1734501763, now seen corresponding path program 1 times [2024-11-16 02:30:00,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:00,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378012646] [2024-11-16 02:30:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:00,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 02:30:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:30:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 02:30:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:30:00,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378012646] [2024-11-16 02:30:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378012646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314996746] [2024-11-16 02:30:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:00,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:00,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:00,253 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) [2024-11-16 02:30:00,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:30:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:30:00,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:30:00,380 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:30:00,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314996746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:30:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:30:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 02:30:00,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946756440] [2024-11-16 02:30:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:30:00,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:30:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:00,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:30:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:30:00,383 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) [2024-11-16 02:30:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:00,397 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2024-11-16 02:30:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:30:00,398 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 [2024-11-16 02:30:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:00,398 INFO L225 Difference]: With dead ends: 48 [2024-11-16 02:30:00,398 INFO L226 Difference]: Without dead ends: 27 [2024-11-16 02:30:00,399 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 [2024-11-16 02:30:00,400 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 [2024-11-16 02:30:00,400 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] [2024-11-16 02:30:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-16 02:30:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-16 02:30:00,407 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) [2024-11-16 02:30:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-16 02:30:00,409 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 34 [2024-11-16 02:30:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:00,410 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-16 02:30:00,410 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) [2024-11-16 02:30:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-16 02:30:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:30:00,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:00,412 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] [2024-11-16 02:30:00,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:30:00,613 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 [2024-11-16 02:30:00,616 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:00,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash -997971140, now seen corresponding path program 1 times [2024-11-16 02:30:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:00,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465155532] [2024-11-16 02:30:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:30:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-16 02:30:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 02:30:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 02:30:00,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:00,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465155532] [2024-11-16 02:30:00,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465155532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838798847] [2024-11-16 02:30:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:00,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:00,815 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) [2024-11-16 02:30:00,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:30:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:00,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:30:00,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 02:30:00,895 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:30:00,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838798847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:30:00,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:30:00,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-11-16 02:30:00,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054720817] [2024-11-16 02:30:00,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:30:00,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:30:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:30:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:30:00,897 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) [2024-11-16 02:30:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:00,912 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2024-11-16 02:30:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:30:00,913 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 [2024-11-16 02:30:00,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:00,914 INFO L225 Difference]: With dead ends: 50 [2024-11-16 02:30:00,915 INFO L226 Difference]: Without dead ends: 31 [2024-11-16 02:30:00,915 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 [2024-11-16 02:30:00,916 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:00,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:30:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-16 02:30:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-16 02:30:00,923 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) [2024-11-16 02:30:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-16 02:30:00,925 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 36 [2024-11-16 02:30:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:00,925 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-16 02:30:00,925 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) [2024-11-16 02:30:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-16 02:30:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 02:30:00,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:00,928 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] [2024-11-16 02:30:00,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 02:30:01,128 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 [2024-11-16 02:30:01,130 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:01,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash 496520382, now seen corresponding path program 1 times [2024-11-16 02:30:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:01,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044850422] [2024-11-16 02:30:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:01,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:30:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:30:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 02:30:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:30:01,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:01,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044850422] [2024-11-16 02:30:01,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044850422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:01,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682147042] [2024-11-16 02:30:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:01,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:01,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:01,340 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) [2024-11-16 02:30:01,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:30:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:30:01,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:30:01,416 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:30:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682147042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:30:01,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:30:01,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-16 02:30:01,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364404501] [2024-11-16 02:30:01,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:30:01,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:30:01,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:30:01,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:30:01,418 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) [2024-11-16 02:30:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:01,427 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-16 02:30:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:30:01,427 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 [2024-11-16 02:30:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:01,428 INFO L225 Difference]: With dead ends: 47 [2024-11-16 02:30:01,428 INFO L226 Difference]: Without dead ends: 31 [2024-11-16 02:30:01,428 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 [2024-11-16 02:30:01,429 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 [2024-11-16 02:30:01,429 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] [2024-11-16 02:30:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-16 02:30:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-16 02:30:01,432 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) [2024-11-16 02:30:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-16 02:30:01,433 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 48 [2024-11-16 02:30:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:01,434 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-16 02:30:01,434 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) [2024-11-16 02:30:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-16 02:30:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:30:01,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:01,435 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] [2024-11-16 02:30:01,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:30:01,639 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 [2024-11-16 02:30:01,640 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:01,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:01,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1319773953, now seen corresponding path program 1 times [2024-11-16 02:30:01,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:01,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665365800] [2024-11-16 02:30:01,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:01,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:30:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:30:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 02:30:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:30:01,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665365800] [2024-11-16 02:30:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665365800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442168242] [2024-11-16 02:30:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:01,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:01,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:01,718 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) [2024-11-16 02:30:01,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:30:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:01,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:30:01,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:30:01,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-16 02:30:01,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442168242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:01,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:01,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-16 02:30:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950879336] [2024-11-16 02:30:01,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:01,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 02:30:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 02:30:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 02:30:01,840 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) [2024-11-16 02:30:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:01,864 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-11-16 02:30:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:30:01,865 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 [2024-11-16 02:30:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:01,866 INFO L225 Difference]: With dead ends: 68 [2024-11-16 02:30:01,866 INFO L226 Difference]: Without dead ends: 43 [2024-11-16 02:30:01,866 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 [2024-11-16 02:30:01,867 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:01,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 100 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:30:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-16 02:30:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-11-16 02:30:01,870 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) [2024-11-16 02:30:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-16 02:30:01,871 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 50 [2024-11-16 02:30:01,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:01,871 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-16 02:30:01,871 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) [2024-11-16 02:30:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-16 02:30:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:30:01,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:01,872 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] [2024-11-16 02:30:01,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:30:02,076 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 [2024-11-16 02:30:02,077 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:02,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:02,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1805779838, now seen corresponding path program 2 times [2024-11-16 02:30:02,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234637046] [2024-11-16 02:30:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:30:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:30:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 02:30:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-16 02:30:02,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:02,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234637046] [2024-11-16 02:30:02,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234637046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:02,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147052004] [2024-11-16 02:30:02,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:30:02,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:02,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:02,175 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) [2024-11-16 02:30:02,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:30:02,249 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:30:02,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:02,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:30:02,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-16 02:30:02,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-16 02:30:02,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147052004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:02,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-16 02:30:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261399339] [2024-11-16 02:30:02,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:02,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:30:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:30:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:30:02,360 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) [2024-11-16 02:30:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:02,389 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2024-11-16 02:30:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:30:02,390 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 [2024-11-16 02:30:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:02,391 INFO L225 Difference]: With dead ends: 84 [2024-11-16 02:30:02,391 INFO L226 Difference]: Without dead ends: 55 [2024-11-16 02:30:02,391 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 [2024-11-16 02:30:02,392 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 [2024-11-16 02:30:02,392 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] [2024-11-16 02:30:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-16 02:30:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-16 02:30:02,397 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) [2024-11-16 02:30:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2024-11-16 02:30:02,398 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 68 [2024-11-16 02:30:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:02,398 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2024-11-16 02:30:02,398 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) [2024-11-16 02:30:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2024-11-16 02:30:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 02:30:02,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:02,399 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] [2024-11-16 02:30:02,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:30:02,603 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 [2024-11-16 02:30:02,604 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:02,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1022551545, now seen corresponding path program 3 times [2024-11-16 02:30:02,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:02,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190886757] [2024-11-16 02:30:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:30:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 02:30:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 02:30:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 02:30:02,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:02,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190886757] [2024-11-16 02:30:02,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190886757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:02,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706415473] [2024-11-16 02:30:02,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:30:02,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:02,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:02,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:30:02,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:30:02,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:30:02,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:02,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:30:02,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 02:30:02,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 58 proven. 8 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-16 02:30:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706415473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:02,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:02,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-16 02:30:02,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216468494] [2024-11-16 02:30:02,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:02,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 02:30:02,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:02,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 02:30:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-16 02:30:02,987 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) [2024-11-16 02:30:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:03,033 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2024-11-16 02:30:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:30:03,034 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 [2024-11-16 02:30:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:03,034 INFO L225 Difference]: With dead ends: 104 [2024-11-16 02:30:03,034 INFO L226 Difference]: Without dead ends: 73 [2024-11-16 02:30:03,035 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 [2024-11-16 02:30:03,040 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:03,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 180 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:30:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-16 02:30:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-16 02:30:03,045 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) [2024-11-16 02:30:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2024-11-16 02:30:03,046 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 82 [2024-11-16 02:30:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:03,047 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2024-11-16 02:30:03,047 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) [2024-11-16 02:30:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2024-11-16 02:30:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-16 02:30:03,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:03,048 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] [2024-11-16 02:30:03,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:30:03,249 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 [2024-11-16 02:30:03,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:03,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:03,250 INFO L85 PathProgramCache]: Analyzing trace with hash 938021056, now seen corresponding path program 4 times [2024-11-16 02:30:03,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:03,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772926326] [2024-11-16 02:30:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:03,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 02:30:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:03,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-16 02:30:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:03,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-16 02:30:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2024-11-16 02:30:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772926326] [2024-11-16 02:30:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772926326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279225693] [2024-11-16 02:30:03,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:30:03,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:03,515 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) [2024-11-16 02:30:03,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:30:03,641 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:30:03,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:03,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:30:03,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 342 proven. 72 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-16 02:30:03,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 418 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-11-16 02:30:03,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279225693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:03,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:03,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-11-16 02:30:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747466723] [2024-11-16 02:30:03,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:03,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-16 02:30:03,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-16 02:30:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-16 02:30:03,975 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) [2024-11-16 02:30:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:04,076 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2024-11-16 02:30:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 02:30:04,076 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 [2024-11-16 02:30:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:04,078 INFO L225 Difference]: With dead ends: 154 [2024-11-16 02:30:04,080 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 02:30:04,080 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 [2024-11-16 02:30:04,081 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:04,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 219 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:30:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 02:30:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-16 02:30:04,089 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) [2024-11-16 02:30:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2024-11-16 02:30:04,090 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 132 [2024-11-16 02:30:04,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:04,090 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2024-11-16 02:30:04,090 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) [2024-11-16 02:30:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2024-11-16 02:30:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-16 02:30:04,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:04,098 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] [2024-11-16 02:30:04,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 02:30:04,298 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 [2024-11-16 02:30:04,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:04,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1222566449, now seen corresponding path program 5 times [2024-11-16 02:30:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899516314] [2024-11-16 02:30:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:04,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:30:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:04,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-16 02:30:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:04,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-16 02:30:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 3720 trivial. 0 not checked. [2024-11-16 02:30:04,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899516314] [2024-11-16 02:30:04,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899516314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:04,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602607995] [2024-11-16 02:30:04,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:30:04,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:04,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:04,694 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) [2024-11-16 02:30:04,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:30:04,968 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-16 02:30:04,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:04,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:30:04,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 1686 proven. 392 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2024-11-16 02:30:05,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 2082 refuted. 0 times theorem prover too weak. 1794 trivial. 0 not checked. [2024-11-16 02:30:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602607995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:05,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:05,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 45 [2024-11-16 02:30:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869635211] [2024-11-16 02:30:05,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:05,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 02:30:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 02:30:05,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:30:05,669 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) [2024-11-16 02:30:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:05,823 INFO L93 Difference]: Finished difference Result 252 states and 323 transitions. [2024-11-16 02:30:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-16 02:30:05,824 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 [2024-11-16 02:30:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:05,827 INFO L225 Difference]: With dead ends: 252 [2024-11-16 02:30:05,827 INFO L226 Difference]: Without dead ends: 173 [2024-11-16 02:30:05,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:30:05,829 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 83 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:05,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 252 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:30:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-16 02:30:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-16 02:30:05,841 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) [2024-11-16 02:30:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 207 transitions. [2024-11-16 02:30:05,846 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 207 transitions. Word has length 230 [2024-11-16 02:30:05,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:05,846 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 207 transitions. [2024-11-16 02:30:05,846 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) [2024-11-16 02:30:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 207 transitions. [2024-11-16 02:30:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-16 02:30:05,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:05,852 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] [2024-11-16 02:30:05,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 02:30:06,056 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 [2024-11-16 02:30:06,057 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:06,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1755517138, now seen corresponding path program 6 times [2024-11-16 02:30:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:06,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957959082] [2024-11-16 02:30:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:06,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:06,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-16 02:30:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:06,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 02:30:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:06,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-11-16 02:30:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16766 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 16584 trivial. 0 not checked. [2024-11-16 02:30:06,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:06,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957959082] [2024-11-16 02:30:06,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957959082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:06,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572817850] [2024-11-16 02:30:06,654 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:30:06,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:06,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:06,655 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) [2024-11-16 02:30:06,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:30:06,809 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:30:06,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:06,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:30:06,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16766 backedges. 7452 proven. 6 refuted. 0 times theorem prover too weak. 9308 trivial. 0 not checked. [2024-11-16 02:30:06,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16766 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16760 trivial. 0 not checked. [2024-11-16 02:30:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572817850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:06,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:06,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 22 [2024-11-16 02:30:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536017864] [2024-11-16 02:30:06,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:06,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 02:30:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 02:30:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-11-16 02:30:06,988 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) [2024-11-16 02:30:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:07,042 INFO L93 Difference]: Finished difference Result 326 states and 398 transitions. [2024-11-16 02:30:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:30:07,042 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 [2024-11-16 02:30:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:07,043 INFO L225 Difference]: With dead ends: 326 [2024-11-16 02:30:07,043 INFO L226 Difference]: Without dead ends: 183 [2024-11-16 02:30:07,043 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 [2024-11-16 02:30:07,044 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 [2024-11-16 02:30:07,044 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] [2024-11-16 02:30:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-16 02:30:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-16 02:30:07,050 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) [2024-11-16 02:30:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 217 transitions. [2024-11-16 02:30:07,051 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 217 transitions. Word has length 424 [2024-11-16 02:30:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:07,051 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 217 transitions. [2024-11-16 02:30:07,051 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) [2024-11-16 02:30:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 217 transitions. [2024-11-16 02:30:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-16 02:30:07,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:07,054 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] [2024-11-16 02:30:07,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 02:30:07,258 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 [2024-11-16 02:30:07,259 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:07,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:07,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1432009009, now seen corresponding path program 7 times [2024-11-16 02:30:07,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462901404] [2024-11-16 02:30:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:07,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 02:30:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:07,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-16 02:30:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:07,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-11-16 02:30:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16830 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:30:07,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462901404] [2024-11-16 02:30:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462901404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175540331] [2024-11-16 02:30:07,821 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:30:07,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:07,824 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) [2024-11-16 02:30:07,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:30:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:08,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:30:08,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16830 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:30:08,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16830 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:30:08,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175540331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:08,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:08,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-16 02:30:08,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974222266] [2024-11-16 02:30:08,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:08,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:30:08,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:08,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:30:08,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:30:08,493 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) [2024-11-16 02:30:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:08,521 INFO L93 Difference]: Finished difference Result 366 states and 449 transitions. [2024-11-16 02:30:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-16 02:30:08,521 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 [2024-11-16 02:30:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:08,526 INFO L225 Difference]: With dead ends: 366 [2024-11-16 02:30:08,526 INFO L226 Difference]: Without dead ends: 215 [2024-11-16 02:30:08,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:30:08,527 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 [2024-11-16 02:30:08,528 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] [2024-11-16 02:30:08,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-16 02:30:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-11-16 02:30:08,533 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) [2024-11-16 02:30:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 249 transitions. [2024-11-16 02:30:08,534 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 249 transitions. Word has length 434 [2024-11-16 02:30:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:08,534 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 249 transitions. [2024-11-16 02:30:08,535 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) [2024-11-16 02:30:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 249 transitions. [2024-11-16 02:30:08,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-16 02:30:08,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:08,539 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] [2024-11-16 02:30:08,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:30:08,739 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 [2024-11-16 02:30:08,740 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:08,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:08,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1812046625, now seen corresponding path program 8 times [2024-11-16 02:30:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:08,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852515265] [2024-11-16 02:30:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:10,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 02:30:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:10,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-11-16 02:30:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:10,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-11-16 02:30:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 17550 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:30:10,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:10,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852515265] [2024-11-16 02:30:10,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852515265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:10,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668482608] [2024-11-16 02:30:10,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:30:10,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:10,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:10,063 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) [2024-11-16 02:30:10,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:30:10,366 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:30:10,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:10,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:30:10,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17550 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:30:10,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17550 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 16620 trivial. 0 not checked. [2024-11-16 02:30:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668482608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:11,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2024-11-16 02:30:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727963319] [2024-11-16 02:30:11,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:11,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-16 02:30:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:11,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-16 02:30:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 02:30:11,537 INFO L87 Difference]: Start difference. First operand 215 states and 249 transitions. Second operand has 63 states, 63 states have (on average 2.4285714285714284) internal successors, (153), 63 states have internal predecessors, (153), 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) [2024-11-16 02:30:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:11,605 INFO L93 Difference]: Finished difference Result 426 states and 523 transitions. [2024-11-16 02:30:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-16 02:30:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.4285714285714284) internal successors, (153), 63 states have internal predecessors, (153), 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 [2024-11-16 02:30:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:11,608 INFO L225 Difference]: With dead ends: 426 [2024-11-16 02:30:11,608 INFO L226 Difference]: Without dead ends: 275 [2024-11-16 02:30:11,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 906 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 02:30:11,610 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:11,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:30:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-16 02:30:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2024-11-16 02:30:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.1222222222222222) internal successors, (303), 270 states have internal predecessors, (303), 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) [2024-11-16 02:30:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 309 transitions. [2024-11-16 02:30:11,624 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 309 transitions. Word has length 466 [2024-11-16 02:30:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:11,625 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 309 transitions. [2024-11-16 02:30:11,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.4285714285714284) internal successors, (153), 63 states have internal predecessors, (153), 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) [2024-11-16 02:30:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 309 transitions. [2024-11-16 02:30:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-16 02:30:11,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:11,629 INFO L215 NwaCegarLoop]: trace histogram [93, 90, 90, 90, 61, 60, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:30:11,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 02:30:11,833 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 [2024-11-16 02:30:11,834 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:11,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2006580803, now seen corresponding path program 9 times [2024-11-16 02:30:11,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:11,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569857603] [2024-11-16 02:30:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:11,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:12,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 02:30:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:13,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-11-16 02:30:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:13,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-11-16 02:30:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20280 backedges. 0 proven. 9250 refuted. 0 times theorem prover too weak. 11030 trivial. 0 not checked. [2024-11-16 02:30:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569857603] [2024-11-16 02:30:13,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569857603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:13,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452174684] [2024-11-16 02:30:13,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:30:13,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:13,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:13,204 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) [2024-11-16 02:30:13,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:30:13,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 02:30:13,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:13,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:30:13,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20280 backedges. 7452 proven. 42 refuted. 0 times theorem prover too weak. 12786 trivial. 0 not checked. [2024-11-16 02:30:13,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20280 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 20238 trivial. 0 not checked. [2024-11-16 02:30:13,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452174684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:13,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:13,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2024-11-16 02:30:13,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187057622] [2024-11-16 02:30:13,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:13,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 02:30:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 02:30:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 02:30:13,834 INFO L87 Difference]: Start difference. First operand 275 states and 309 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) [2024-11-16 02:30:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:13,975 INFO L93 Difference]: Finished difference Result 446 states and 526 transitions. [2024-11-16 02:30:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-16 02:30:13,976 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 526 [2024-11-16 02:30:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:13,977 INFO L225 Difference]: With dead ends: 446 [2024-11-16 02:30:13,978 INFO L226 Difference]: Without dead ends: 297 [2024-11-16 02:30:13,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 02:30:13,979 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 107 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:13,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 231 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:30:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-16 02:30:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2024-11-16 02:30:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.1172413793103448) internal successors, (324), 290 states have internal predecessors, (324), 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) [2024-11-16 02:30:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 330 transitions. [2024-11-16 02:30:13,989 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 330 transitions. Word has length 526 [2024-11-16 02:30:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:13,989 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 330 transitions. [2024-11-16 02:30:13,990 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) [2024-11-16 02:30:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 330 transitions. [2024-11-16 02:30:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-11-16 02:30:13,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:13,994 INFO L215 NwaCegarLoop]: trace histogram [96, 93, 93, 93, 61, 60, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:30:14,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 02:30:14,194 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 [2024-11-16 02:30:14,195 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:14,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1477803443, now seen corresponding path program 10 times [2024-11-16 02:30:14,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:14,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147986173] [2024-11-16 02:30:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:14,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:15,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 02:30:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:15,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-11-16 02:30:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:15,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2024-11-16 02:30:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 21558 backedges. 0 proven. 9868 refuted. 0 times theorem prover too weak. 11690 trivial. 0 not checked. [2024-11-16 02:30:15,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147986173] [2024-11-16 02:30:15,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147986173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160933412] [2024-11-16 02:30:15,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:30:15,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:15,644 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) [2024-11-16 02:30:15,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:30:16,044 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:30:16,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:30:16,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 02:30:16,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:30:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21558 backedges. 7946 proven. 1922 refuted. 0 times theorem prover too weak. 11690 trivial. 0 not checked. [2024-11-16 02:30:16,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:30:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 21558 backedges. 7946 proven. 1922 refuted. 0 times theorem prover too weak. 11690 trivial. 0 not checked. [2024-11-16 02:30:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160933412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:30:17,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:30:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 62 [2024-11-16 02:30:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600173598] [2024-11-16 02:30:17,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:30:17,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-16 02:30:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:30:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-16 02:30:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 02:30:17,217 INFO L87 Difference]: Start difference. First operand 295 states and 330 transitions. Second operand has 62 states, 62 states have (on average 4.387096774193548) internal successors, (272), 62 states have internal predecessors, (272), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:30:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:30:17,466 INFO L93 Difference]: Finished difference Result 580 states and 709 transitions. [2024-11-16 02:30:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-16 02:30:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.387096774193548) internal successors, (272), 62 states have internal predecessors, (272), 2 states have call successors, (5), 1 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 554 [2024-11-16 02:30:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:30:17,468 INFO L225 Difference]: With dead ends: 580 [2024-11-16 02:30:17,469 INFO L226 Difference]: Without dead ends: 411 [2024-11-16 02:30:17,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1082 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 02:30:17,470 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 195 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:30:17,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 284 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:30:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-16 02:30:17,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2024-11-16 02:30:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 406 states have (on average 1.1551724137931034) internal successors, (469), 406 states have internal predecessors, (469), 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) [2024-11-16 02:30:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 475 transitions. [2024-11-16 02:30:17,480 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 475 transitions. Word has length 554 [2024-11-16 02:30:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:30:17,481 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 475 transitions. [2024-11-16 02:30:17,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.387096774193548) internal successors, (272), 62 states have internal predecessors, (272), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 02:30:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 475 transitions. [2024-11-16 02:30:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2024-11-16 02:30:17,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:30:17,490 INFO L215 NwaCegarLoop]: trace histogram [183, 180, 180, 180, 61, 60, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:30:17,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 02:30:17,694 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 [2024-11-16 02:30:17,695 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:30:17,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:30:17,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1993870471, now seen corresponding path program 11 times [2024-11-16 02:30:17,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:30:17,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797767427] [2024-11-16 02:30:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:30:17,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:30:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:18,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 02:30:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:18,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-11-16 02:30:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:18,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2024-11-16 02:30:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:30:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 69408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 69198 trivial. 0 not checked. [2024-11-16 02:30:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:30:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797767427] [2024-11-16 02:30:18,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797767427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:30:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043433175] [2024-11-16 02:30:18,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:30:18,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:30:18,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:30:18,749 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) [2024-11-16 02:30:18,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process