./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_o200.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_o200.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1 --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 d03bd1f663815b2d7649a36366d573d68ceb56233e8a1c24e8a8623e8a524f12 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:31:15,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:31:15,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:31:15,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:31:15,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:31:15,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:31:15,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:31:15,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:31:15,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:31:15,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:31:15,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:31:15,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:31:15,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:31:15,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:31:15,830 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:31:15,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:31:15,831 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:31:15,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:31:15,832 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:31:15,832 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:31:15,832 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:31:15,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:31:15,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:31:15,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:31:15,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:31:15,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:31:15,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:31:15,833 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:31:15,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:31:15,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:31:15,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:31:15,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:31:15,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:31:15,834 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_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1 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 -> d03bd1f663815b2d7649a36366d573d68ceb56233e8a1c24e8a8623e8a524f12 [2024-12-02 15:31:16,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:31:16,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:31:16,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:31:16,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:31:16,114 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:31:16,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/recursive-simple/id_o200.c [2024-12-02 15:31:19,307 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/data/7cd1890b1/c03167d7c3a64645ab04634eb25ad625/FLAGd204c175e [2024-12-02 15:31:19,538 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:31:19,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/sv-benchmarks/c/recursive-simple/id_o200.c [2024-12-02 15:31:19,547 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/data/7cd1890b1/c03167d7c3a64645ab04634eb25ad625/FLAGd204c175e [2024-12-02 15:31:19,561 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/data/7cd1890b1/c03167d7c3a64645ab04634eb25ad625 [2024-12-02 15:31:19,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:31:19,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:31:19,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:31:19,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:31:19,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:31:19,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1ea86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19, skipping insertion in model container [2024-12-02 15:31:19,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:31:19,753 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_a1c00664-a360-494d-8dbd-1a4e2a7306f6/sv-benchmarks/c/recursive-simple/id_o200.c[518,531] [2024-12-02 15:31:19,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:31:19,768 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:31:19,782 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_a1c00664-a360-494d-8dbd-1a4e2a7306f6/sv-benchmarks/c/recursive-simple/id_o200.c[518,531] [2024-12-02 15:31:19,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:31:19,800 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:31:19,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19 WrapperNode [2024-12-02 15:31:19,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:31:19,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:31:19,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:31:19,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:31:19,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,834 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-12-02 15:31:19,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:31:19,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:31:19,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:31:19,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:31:19,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,857 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]. [2024-12-02 15:31:19,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,860 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:31:19,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:31:19,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:31:19,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:31:19,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (1/1) ... [2024-12-02 15:31:19,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:31:19,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:19,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:31:19,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:31:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:31:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:31:19,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:31:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:31:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-12-02 15:31:19,934 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-12-02 15:31:19,998 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:31:20,000 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:31:20,100 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-12-02 15:31:20,101 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:31:20,112 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:31:20,112 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 15:31:20,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:20 BoogieIcfgContainer [2024-12-02 15:31:20,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:31:20,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:31:20,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:31:20,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:31:20,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:31:19" (1/3) ... [2024-12-02 15:31:20,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54527fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:20, skipping insertion in model container [2024-12-02 15:31:20,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:19" (2/3) ... [2024-12-02 15:31:20,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54527fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:20, skipping insertion in model container [2024-12-02 15:31:20,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:20" (3/3) ... [2024-12-02 15:31:20,124 INFO L128 eAbstractionObserver]: Analyzing ICFG id_o200.c [2024-12-02 15:31:20,142 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:31:20,144 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG id_o200.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 15:31:20,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:31:20,217 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;@954626b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:31:20,217 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:31:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2024-12-02 15:31:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-02 15:31:20,230 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:20,230 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:20,231 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:20,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-12-02 15:31:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791633270] [2024-12-02 15:31:20,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:31:20,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791633270] [2024-12-02 15:31:20,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791633270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:31:20,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:31:20,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:31:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001873721] [2024-12-02 15:31:20,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:31:20,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:31:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:20,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:31:20,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:31:20,525 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-12-02 15:31:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:20,570 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-12-02 15:31:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:31:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2024-12-02 15:31:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:20,580 INFO L225 Difference]: With dead ends: 25 [2024-12-02 15:31:20,580 INFO L226 Difference]: Without dead ends: 15 [2024-12-02 15:31:20,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:31:20,586 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:20,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:31:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-12-02 15:31:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-12-02 15:31:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 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) [2024-12-02 15:31:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-12-02 15:31:20,620 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-12-02 15:31:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:20,620 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-12-02 15:31:20,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-12-02 15:31:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-12-02 15:31:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-02 15:31:20,622 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:20,622 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:20,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:31:20,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:20,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-12-02 15:31:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:20,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779951973] [2024-12-02 15:31:20,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:20,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:31:20,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779951973] [2024-12-02 15:31:20,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779951973] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:20,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878902155] [2024-12-02 15:31:20,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:31:20,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:20,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:20,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:31:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:31:20,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 15:31:20,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:31:20,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 15:31:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878902155] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:21,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:21,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-12-02 15:31:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255740285] [2024-12-02 15:31:21,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:21,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:31:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:21,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:31:21,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:31:21,152 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 15:31:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:21,206 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2024-12-02 15:31:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:31:21,207 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2024-12-02 15:31:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:21,208 INFO L225 Difference]: With dead ends: 27 [2024-12-02 15:31:21,208 INFO L226 Difference]: Without dead ends: 21 [2024-12-02 15:31:21,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:31:21,210 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:21,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:31:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-12-02 15:31:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-12-02 15:31:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 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) [2024-12-02 15:31:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-12-02 15:31:21,217 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-12-02 15:31:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:21,217 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-12-02 15:31:21,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 15:31:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-12-02 15:31:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 15:31:21,218 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:21,219 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:21,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:31:21,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:21,419 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:21,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:21,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 2 times [2024-12-02 15:31:21,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:21,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768823855] [2024-12-02 15:31:21,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:31:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:21,445 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:31:21,446 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:31:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:31:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768823855] [2024-12-02 15:31:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768823855] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056252105] [2024-12-02 15:31:21,720 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:31:21,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:21,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:21,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:21,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:31:21,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:31:21,772 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:31:21,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:31:21,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:31:21,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 15:31:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056252105] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:22,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:22,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-12-02 15:31:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101512503] [2024-12-02 15:31:22,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:22,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 15:31:22,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:22,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 15:31:22,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:31:22,211 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 15:31:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:22,433 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-12-02 15:31:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:31:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 28 [2024-12-02 15:31:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:22,434 INFO L225 Difference]: With dead ends: 39 [2024-12-02 15:31:22,434 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 15:31:22,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:31:22,436 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:22,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:31:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 15:31:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-12-02 15:31:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 15:31:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-12-02 15:31:22,446 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2024-12-02 15:31:22,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:22,446 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-12-02 15:31:22,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 15:31:22,446 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-12-02 15:31:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:31:22,448 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:22,448 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:22,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:31:22,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:22,649 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:22,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 3 times [2024-12-02 15:31:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:22,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271275625] [2024-12-02 15:31:22,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:31:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:22,718 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 15:31:22,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:31:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 15:31:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271275625] [2024-12-02 15:31:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271275625] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694851748] [2024-12-02 15:31:23,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:31:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:23,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:23,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:31:23,280 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 15:31:23,280 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:31:23,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 15:31:23,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 15:31:23,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 15:31:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694851748] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:24,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-12-02 15:31:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475938713] [2024-12-02 15:31:24,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:24,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 15:31:24,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:24,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 15:31:24,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:31:24,336 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:31:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:31:25,432 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2024-12-02 15:31:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:31:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 52 [2024-12-02 15:31:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:31:25,434 INFO L225 Difference]: With dead ends: 63 [2024-12-02 15:31:25,435 INFO L226 Difference]: Without dead ends: 57 [2024-12-02 15:31:25,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=386, Invalid=1966, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:31:25,438 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:31:25,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:31:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-12-02 15:31:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-12-02 15:31:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 15:31:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-12-02 15:31:25,452 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2024-12-02 15:31:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:31:25,453 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-12-02 15:31:25,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 15:31:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-12-02 15:31:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 15:31:25,455 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:31:25,456 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:31:25,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 15:31:25,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:25,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:31:25,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:31:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 4 times [2024-12-02 15:31:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:31:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849346467] [2024-12-02 15:31:25,657 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:31:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:31:25,697 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:31:25,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:31:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-12-02 15:31:26,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:31:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849346467] [2024-12-02 15:31:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849346467] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:31:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458093626] [2024-12-02 15:31:26,855 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:31:26,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:31:26,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:31:26,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:31:26,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:31:26,921 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:31:26,921 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:31:26,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-12-02 15:31:26,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:31:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-12-02 15:31:27,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:31:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-12-02 15:31:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458093626] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:31:30,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:31:30,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2024-12-02 15:31:30,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807663908] [2024-12-02 15:31:30,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:31:30,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 15:31:30,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:31:30,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 15:31:30,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 15:31:30,158 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2024-12-02 15:31:45,675 WARN L286 SmtUtils]: Spent 9.06s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:31:55,640 WARN L286 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:32:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:02,071 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2024-12-02 15:32:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-12-02 15:32:02,071 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) Word has length 100 [2024-12-02 15:32:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:02,072 INFO L225 Difference]: With dead ends: 111 [2024-12-02 15:32:02,073 INFO L226 Difference]: Without dead ends: 105 [2024-12-02 15:32:02,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=1530, Invalid=7782, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 15:32:02,075 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:02,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1284 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:32:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-12-02 15:32:02,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-12-02 15:32:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 71 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2024-12-02 15:32:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-12-02 15:32:02,090 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2024-12-02 15:32:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:02,090 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-12-02 15:32:02,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2024-12-02 15:32:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-12-02 15:32:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 15:32:02,093 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:02,093 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:02,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:32:02,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:02,294 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:02,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1665704854, now seen corresponding path program 5 times [2024-12-02 15:32:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:02,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353597992] [2024-12-02 15:32:02,295 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:32:02,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:02,490 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-12-02 15:32:02,490 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:32:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2024-12-02 15:32:05,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353597992] [2024-12-02 15:32:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353597992] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:32:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108501478] [2024-12-02 15:32:05,781 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:32:05,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:05,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:05,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:32:05,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:32:06,450 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-12-02 15:32:06,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:32:06,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-12-02 15:32:06,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:32:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2024-12-02 15:32:06,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:32:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2024-12-02 15:32:17,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108501478] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:32:17,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:32:17,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 133 [2024-12-02 15:32:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046286756] [2024-12-02 15:32:17,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:32:17,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-12-02 15:32:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:17,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-12-02 15:32:17,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2252, Invalid=15304, Unknown=0, NotChecked=0, Total=17556 [2024-12-02 15:32:17,408 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 133 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 69 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (64), 64 states have call predecessors, (64), 1 states have call successors, (64) [2024-12-02 15:33:00,115 WARN L286 SmtUtils]: Spent 38.03s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:33:27,885 WARN L286 SmtUtils]: Spent 27.19s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:34:01,880 WARN L286 SmtUtils]: Spent 33.39s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:34:35,031 WARN L286 SmtUtils]: Spent 32.67s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:35:05,200 WARN L286 SmtUtils]: Spent 29.49s on a formula simplification that was a NOOP. DAG size: 149 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:35:39,573 WARN L286 SmtUtils]: Spent 31.30s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:36:14,202 WARN L286 SmtUtils]: Spent 31.13s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:36:44,040 WARN L286 SmtUtils]: Spent 27.48s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:37:06,515 WARN L286 SmtUtils]: Spent 20.41s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:37:21,378 WARN L286 SmtUtils]: Spent 13.38s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:37:44,320 WARN L286 SmtUtils]: Spent 21.23s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:38:05,240 WARN L286 SmtUtils]: Spent 17.47s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:38:25,823 WARN L286 SmtUtils]: Spent 20.17s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:38:46,087 WARN L286 SmtUtils]: Spent 18.25s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:38:58,129 WARN L286 SmtUtils]: Spent 11.48s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:39:15,681 WARN L286 SmtUtils]: Spent 16.31s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:39:33,970 WARN L286 SmtUtils]: Spent 15.52s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:39:51,440 WARN L286 SmtUtils]: Spent 17.03s on a formula simplification that was a NOOP. DAG size: 117 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:40:10,919 WARN L286 SmtUtils]: Spent 18.97s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:40:16,978 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 112 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:40:22,822 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:40:29,410 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:40:37,900 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:41:15,115 WARN L286 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:41:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:28,030 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2024-12-02 15:41:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-12-02 15:41:28,031 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 69 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (64), 64 states have call predecessors, (64), 1 states have call successors, (64) Word has length 196 [2024-12-02 15:41:28,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:28,033 INFO L225 Difference]: With dead ends: 207 [2024-12-02 15:41:28,033 INFO L226 Difference]: Without dead ends: 201 [2024-12-02 15:41:28,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3015 ImplicationChecksByTransitivity, 557.1s TimeCoverageRelationStatistics Valid=6122, Invalid=30934, Unknown=0, NotChecked=0, Total=37056 [2024-12-02 15:41:28,038 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 3206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:28,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3971 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3206 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 15:41:28,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-12-02 15:41:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-12-02 15:41:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 134 states have (on average 1.007462686567164) internal successors, (135), 135 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (65), 64 states have call predecessors, (65), 2 states have call successors, (65) [2024-12-02 15:41:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2024-12-02 15:41:28,073 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 196 [2024-12-02 15:41:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:28,073 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2024-12-02 15:41:28,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 69 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (64), 64 states have call predecessors, (64), 1 states have call successors, (64) [2024-12-02 15:41:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2024-12-02 15:41:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-12-02 15:41:28,081 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:28,081 INFO L218 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:28,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:41:28,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 15:41:28,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:28,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1378592874, now seen corresponding path program 6 times [2024-12-02 15:41:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:28,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794518700] [2024-12-02 15:41:28,282 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:41:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:28,808 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2024-12-02 15:41:28,808 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:41:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 5985 trivial. 0 not checked. [2024-12-02 15:41:37,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794518700] [2024-12-02 15:41:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794518700] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:41:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73909893] [2024-12-02 15:41:37,962 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:41:37,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:37,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:41:37,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:41:37,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c00664-a360-494d-8dbd-1a4e2a7306f6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:41:42,283 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2024-12-02 15:41:42,284 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:41:42,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 260 conjuncts are in the unsatisfiable core [2024-12-02 15:41:42,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:41:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 5985 trivial. 0 not checked. [2024-12-02 15:41:42,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:42:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 5985 trivial. 0 not checked. [2024-12-02 15:42:15,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73909893] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:42:15,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:42:15,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131, 131] total 261 [2024-12-02 15:42:15,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178224823] [2024-12-02 15:42:15,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:42:15,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 261 states [2024-12-02 15:42:15,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:15,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 261 interpolants. [2024-12-02 15:42:15,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8588, Invalid=59272, Unknown=0, NotChecked=0, Total=67860 [2024-12-02 15:42:15,678 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 261 states, 261 states have (on average 1.0229885057471264) internal successors, (267), 133 states have internal predecessors, (267), 1 states have call successors, (2), 1 states have call predecessors, (2), 128 states have return successors, (128), 128 states have call predecessors, (128), 1 states have call successors, (128)