./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd --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 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:12:50,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:12:50,527 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:12:50,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:12:50,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:12:50,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:12:50,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:12:50,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:12:50,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:12:50,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:12:50,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:12:50,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:12:50,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:12:50,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:12:50,595 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:12:50,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:12:50,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:12:50,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:12:50,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:12:50,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:12:50,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:12:50,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:12:50,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:12:50,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:12:50,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:12:50,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:12:50,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:12:50,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:12:50,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:12:50,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:12:50,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:12:50,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:12:50,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:12:50,601 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd 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 -> 6256a35b65d93a8e45ad38c9510c3be689a890aeee58265a5723be13a7385a72 [2024-11-13 13:12:50,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:12:50,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:12:50,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:12:50,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:12:50,987 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:12:50,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursive/recHanoi03-2.c Unable to find full path for "g++" [2024-11-13 13:12:53,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:12:53,531 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:12:53,535 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/sv-benchmarks/c/recursive/recHanoi03-2.c [2024-11-13 13:12:53,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/data/1d27ba1e0/e92703141da34685b186364a3a8bfcd7/FLAGd2d7f4acd [2024-11-13 13:12:53,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/data/1d27ba1e0/e92703141da34685b186364a3a8bfcd7 [2024-11-13 13:12:53,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:12:53,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:12:53,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:12:53,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:12:53,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:12:53,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744c70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53, skipping insertion in model container [2024-11-13 13:12:53,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:12:53,803 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2024-11-13 13:12:53,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:12:53,818 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:12:53,830 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2024-11-13 13:12:53,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:12:53,845 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:12:53,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53 WrapperNode [2024-11-13 13:12:53,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:12:53,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:12:53,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:12:53,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:12:53,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,879 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-13 13:12:53,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:12:53,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:12:53,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:12:53,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:12:53,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,902 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:12:53,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:12:53,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:12:53,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:12:53,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:12:53,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (1/1) ... [2024-11-13 13:12:53,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:12:53,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:12:53,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:12:53,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:12:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:12:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-11-13 13:12:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-11-13 13:12:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:12:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:12:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:12:54,081 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:12:54,083 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:12:54,232 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 13:12:54,232 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:12:54,244 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:12:54,245 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 13:12:54,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:12:54 BoogieIcfgContainer [2024-11-13 13:12:54,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:12:54,251 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:12:54,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:12:54,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:12:54,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:12:53" (1/3) ... [2024-11-13 13:12:54,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11d738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:12:54, skipping insertion in model container [2024-11-13 13:12:54,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:12:53" (2/3) ... [2024-11-13 13:12:54,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11d738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:12:54, skipping insertion in model container [2024-11-13 13:12:54,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:12:54" (3/3) ... [2024-11-13 13:12:54,267 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2024-11-13 13:12:54,280 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:12:54,282 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG recHanoi03-2.c that has 2 procedures, 17 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 13:12:54,351 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:12:54,372 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;@490a29a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:12:54,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:12:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 13:12:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 13:12:54,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:12:54,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:12:54,388 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:12:54,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2024-11-13 13:12:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:54,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600334933] [2024-11-13 13:12:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:54,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:12:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:12:54,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:12:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600334933] [2024-11-13 13:12:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600334933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:12:54,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:12:54,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:12:54,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081576941] [2024-11-13 13:12:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:12:54,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:12:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:12:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:12:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:12:54,915 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 13:12:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:12:55,044 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-13 13:12:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:12:55,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-13 13:12:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:12:55,058 INFO L225 Difference]: With dead ends: 26 [2024-11-13 13:12:55,058 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 13:12:55,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:12:55,065 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:12:55,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 48 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:12:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 13:12:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 13:12:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:12:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-13 13:12:55,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2024-11-13 13:12:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:12:55,103 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-13 13:12:55,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 13:12:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-13 13:12:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 13:12:55,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:12:55,105 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:12:55,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:12:55,105 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:12:55,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2024-11-13 13:12:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:55,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594253273] [2024-11-13 13:12:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:55,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:55,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:12:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:55,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:12:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:12:55,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:12:55,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594253273] [2024-11-13 13:12:55,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594253273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:12:55,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060416101] [2024-11-13 13:12:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:55,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:12:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:12:55,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:12:55,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:12:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:55,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:12:55,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:12:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:12:56,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:12:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:12:56,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060416101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:12:56,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:12:56,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2024-11-13 13:12:56,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951592270] [2024-11-13 13:12:56,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:12:56,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:12:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:12:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:12:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:12:56,658 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 13:12:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:12:56,884 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-13 13:12:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:12:56,885 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 17 [2024-11-13 13:12:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:12:56,886 INFO L225 Difference]: With dead ends: 28 [2024-11-13 13:12:56,886 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 13:12:56,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:12:56,888 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:12:56,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 73 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:12:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 13:12:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-13 13:12:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:12:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-13 13:12:56,895 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2024-11-13 13:12:56,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:12:56,895 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-13 13:12:56,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 13:12:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-13 13:12:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:12:56,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:12:56,897 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:12:56,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:12:57,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 13:12:57,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:12:57,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:12:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash -491101836, now seen corresponding path program 2 times [2024-11-13 13:12:57,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:12:57,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445908909] [2024-11-13 13:12:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:12:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:12:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:57,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:12:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:57,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:12:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:57,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:12:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:57,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:12:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:12:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:12:57,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:12:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445908909] [2024-11-13 13:12:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445908909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:12:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391381421] [2024-11-13 13:12:57,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:12:57,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:12:57,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:12:57,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:12:57,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:12:57,730 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:12:57,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:12:57,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:12:57,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:12:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:12:58,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:12:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:12:59,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391381421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:12:59,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:12:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 31 [2024-11-13 13:12:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932518354] [2024-11-13 13:12:59,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:12:59,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 13:12:59,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:12:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 13:12:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:12:59,782 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 21 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 13:13:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:00,187 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2024-11-13 13:13:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 13:13:00,188 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 21 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) Word has length 29 [2024-11-13 13:13:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:00,188 INFO L225 Difference]: With dead ends: 37 [2024-11-13 13:13:00,189 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 13:13:00,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1387, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 13:13:00,191 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:00,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 113 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:13:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 13:13:00,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-13 13:13:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:13:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-11-13 13:13:00,200 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 29 [2024-11-13 13:13:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:00,200 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-11-13 13:13:00,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 21 states have internal predecessors, (41), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-13 13:13:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-11-13 13:13:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 13:13:00,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:00,202 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:00,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:00,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:00,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:00,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash 278928068, now seen corresponding path program 3 times [2024-11-13 13:13:00,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:00,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633832504] [2024-11-13 13:13:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:00,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:13:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:00,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:01,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:01,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:01,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:01,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:01,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 13:13:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633832504] [2024-11-13 13:13:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633832504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:01,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950598994] [2024-11-13 13:13:01,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:13:01,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:01,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:01,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:01,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:13:01,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 13:13:01,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:01,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 13:13:01,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 13:13:02,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:13:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950598994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:07,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:07,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 46 [2024-11-13 13:13:07,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456535955] [2024-11-13 13:13:07,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:07,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 13:13:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:07,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 13:13:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1834, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 13:13:07,199 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 30 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-13 13:13:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:07,898 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2024-11-13 13:13:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 13:13:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 30 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) Word has length 47 [2024-11-13 13:13:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:07,901 INFO L225 Difference]: With dead ends: 55 [2024-11-13 13:13:07,902 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 13:13:07,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=631, Invalid=3925, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 13:13:07,907 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:07,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 279 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:13:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 13:13:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-13 13:13:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-13 13:13:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2024-11-13 13:13:07,919 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 47 [2024-11-13 13:13:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:07,920 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2024-11-13 13:13:07,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 30 states have internal predecessors, (59), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-13 13:13:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2024-11-13 13:13:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 13:13:07,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:07,927 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:07,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:13:08,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:08,128 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:08,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2030797316, now seen corresponding path program 4 times [2024-11-13 13:13:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759143774] [2024-11-13 13:13:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:13:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:09,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:09,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:09,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:09,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:10,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-13 13:13:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:11,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759143774] [2024-11-13 13:13:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759143774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:11,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130028678] [2024-11-13 13:13:11,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:13:11,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:11,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:11,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:11,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:13:11,158 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:13:11,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:11,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 13:13:11,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-13 13:13:12,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 13:13:46,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130028678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:46,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:46,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 42] total 76 [2024-11-13 13:13:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012098617] [2024-11-13 13:13:46,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:46,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-13 13:13:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-13 13:13:46,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=5134, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 13:13:46,443 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 76 states, 76 states have (on average 1.25) internal successors, (95), 48 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2024-11-13 13:13:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:49,201 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2024-11-13 13:13:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 13:13:49,202 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.25) internal successors, (95), 48 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) Word has length 83 [2024-11-13 13:13:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:49,204 INFO L225 Difference]: With dead ends: 91 [2024-11-13 13:13:49,204 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 13:13:49,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2953 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1873, Invalid=12889, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 13:13:49,209 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 382 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:49,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 680 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:13:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 13:13:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-13 13:13:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 58 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-13 13:13:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2024-11-13 13:13:49,224 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 83 [2024-11-13 13:13:49,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:49,224 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2024-11-13 13:13:49,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.25) internal successors, (95), 48 states have internal predecessors, (95), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2024-11-13 13:13:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2024-11-13 13:13:49,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-13 13:13:49,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:49,227 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:49,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:13:49,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:49,429 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:49,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash -341184380, now seen corresponding path program 5 times [2024-11-13 13:13:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488985943] [2024-11-13 13:13:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:13:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:51,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:55,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:55,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:56,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:56,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:57,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:57,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:58,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:59,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:14:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:14:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:14:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:14:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2024-11-13 13:14:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:00,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488985943] [2024-11-13 13:14:00,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488985943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:00,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570984793] [2024-11-13 13:14:00,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:14:00,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:00,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:00,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:14:01,137 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-13 13:14:01,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:01,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 13:14:01,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-11-13 13:14:04,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:14:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570984793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:04,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:14:04,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [55] total 107 [2024-11-13 13:14:04,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824491462] [2024-11-13 13:14:04,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:04,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 13:14:04,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 13:14:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=10549, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 13:14:04,832 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 13:14:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:05,118 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2024-11-13 13:14:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 13:14:05,119 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) Word has length 155 [2024-11-13 13:14:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:05,120 INFO L225 Difference]: With dead ends: 85 [2024-11-13 13:14:05,120 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 13:14:05,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=793, Invalid=10549, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 13:14:05,123 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:05,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 548 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:14:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 13:14:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 13:14:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 13:14:05,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2024-11-13 13:14:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:05,125 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 13:14:05,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 29 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 13:14:05,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 13:14:05,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 13:14:05,128 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:14:05,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:05,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:05,332 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1] [2024-11-13 13:14:05,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 13:14:05,881 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:14:05,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:14:05 BoogieIcfgContainer [2024-11-13 13:14:05,944 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:14:05,945 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:14:05,945 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:14:05,945 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:14:05,946 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:12:54" (3/4) ... [2024-11-13 13:14:05,949 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:14:05,956 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2024-11-13 13:14:05,961 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 13:14:05,963 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 13:14:05,963 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 13:14:05,963 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:14:06,054 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:14:06,055 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:14:06,055 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:14:06,059 INFO L158 Benchmark]: Toolchain (without parser) took 72472.54ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 93.5MB in the beginning and 475.1MB in the end (delta: -381.6MB). Peak memory consumption was 124.8MB. Max. memory is 16.1GB. [2024-11-13 13:14:06,060 INFO L158 Benchmark]: CDTParser took 1.14ms. Allocated memory is still 167.8MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:06,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.38ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 83.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:14:06,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.12ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:06,062 INFO L158 Benchmark]: Boogie Preprocessor took 39.48ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:06,062 INFO L158 Benchmark]: RCFGBuilder took 325.20ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 71.1MB in the end (delta: 9.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:14:06,063 INFO L158 Benchmark]: TraceAbstraction took 71693.02ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 70.8MB in the beginning and 479.3MB in the end (delta: -408.5MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. [2024-11-13 13:14:06,063 INFO L158 Benchmark]: Witness Printer took 109.92ms. Allocated memory is still 629.1MB. Free memory was 479.3MB in the beginning and 475.1MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:06,066 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14ms. Allocated memory is still 167.8MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.38ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 83.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.12ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 81.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.48ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 325.20ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 71.1MB in the end (delta: 9.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 71693.02ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 70.8MB in the beginning and 479.3MB in the end (delta: -408.5MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. * Witness Printer took 109.92ms. Allocated memory is still 629.1MB. Free memory was 479.3MB in the beginning and 475.1MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 35]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.0s, OverallIterations: 6, TraceHistogramMax: 25, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 518 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 467 mSDsluCounter, 1741 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1610 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2194 IncrementalHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 131 mSDtfsCounter, 2194 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 806 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5023 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=5, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 64.1s InterpolantComputationTime, 673 NumberOfCodeBlocks, 673 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 834 ConstructedInterpolants, 0 QuantifiedInterpolants, 3472 SizeOfPredicates, 22 NumberOfNonLiveVariables, 864 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 3280/5280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 18]: Procedure Contract for hanoi Derived contract for procedure hanoi. Ensures: ((((((((((((((((n <= 13) && (8191 <= \result)) || ((3 <= \result) && (n <= 2))) || ((n <= 11) && (2047 <= \result))) || ((n <= 6) && (63 <= \result))) || ((511 <= \result) && (n <= 9))) || ((n <= 7) && (127 <= \result))) || (33554430 < \result)) || ((n <= 8) && (255 <= \result))) || ((n <= 12) && (4095 <= \result))) || ((\result == 1) && (n == 1))) || ((n <= 5) && (31 <= \result))) || ((1023 <= \result) && (n <= 10))) || ((7 <= \result) && (n <= 3))) || ((16383 <= \result) && (((long long) 8178 + n) <= \result))) || ((15 <= \result) && (n <= 4))) RESULT: Ultimate proved your program to be correct! [2024-11-13 13:14:06,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1a0c54a-2b22-469f-9b26-1c00ed793f79/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE