./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/copysome1-2.i --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_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/copysome1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB --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 fba7b7c813943ca4d863bf010df4d3f1a074ecd1ac1791c737a4b5fb8e2d7ea1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:17:16,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:17:16,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:17:16,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:17:16,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:17:16,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:17:16,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:17:16,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:17:16,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:17:16,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:17:16,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:17:16,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:17:16,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:17:16,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:17:16,911 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:17:16,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:17:16,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:17:16,912 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:17:16,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:17:16,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:17:16,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:17:16,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:17:16,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:17:16,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:17:16,913 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:17:16,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:17:16,913 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:17:16,913 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:17:16,914 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:17:16,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:17:16,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:17:16,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:17:16,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:17:16,915 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:17:16,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:17:16,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:17:16,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:17:16,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:17:16,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:17:16,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:17:16,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:17:16,916 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_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB 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 -> fba7b7c813943ca4d863bf010df4d3f1a074ecd1ac1791c737a4b5fb8e2d7ea1 [2024-11-28 03:17:17,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:17:17,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:17:17,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:17:17,354 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:17:17,355 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:17:17,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-programs/copysome1-2.i [2024-11-28 03:17:20,707 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/data/abb6d93d9/b015bccf8006486a9c6dacf61d2b191f/FLAG699526f34 [2024-11-28 03:17:21,006 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:17:21,011 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/sv-benchmarks/c/array-programs/copysome1-2.i [2024-11-28 03:17:21,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/data/abb6d93d9/b015bccf8006486a9c6dacf61d2b191f/FLAG699526f34 [2024-11-28 03:17:21,281 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/data/abb6d93d9/b015bccf8006486a9c6dacf61d2b191f [2024-11-28 03:17:21,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:17:21,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:17:21,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:17:21,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:17:21,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:17:21,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e72446d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21, skipping insertion in model container [2024-11-28 03:17:21,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,315 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:17:21,522 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_e4355f3a-5013-4975-b936-33cb5a06fbf1/sv-benchmarks/c/array-programs/copysome1-2.i[805,818] [2024-11-28 03:17:21,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:17:21,553 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:17:21,567 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_e4355f3a-5013-4975-b936-33cb5a06fbf1/sv-benchmarks/c/array-programs/copysome1-2.i[805,818] [2024-11-28 03:17:21,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:17:21,605 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:17:21,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21 WrapperNode [2024-11-28 03:17:21,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:17:21,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:17:21,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:17:21,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:17:21,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,657 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-11-28 03:17:21,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:17:21,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:17:21,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:17:21,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:17:21,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,704 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-28 03:17:21,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,713 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:17:21,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:17:21,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:17:21,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:17:21,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (1/1) ... [2024-11-28 03:17:21,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:17:21,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:21,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:17:21,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:17:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:17:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:17:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:17:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:17:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:17:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:17:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:17:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:17:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:17:21,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:17:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:17:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:17:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:17:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:17:21,924 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:17:21,926 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:17:22,108 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-28 03:17:22,108 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:17:22,122 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:17:22,122 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 03:17:22,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:22 BoogieIcfgContainer [2024-11-28 03:17:22,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:17:22,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:17:22,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:17:22,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:17:22,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:17:21" (1/3) ... [2024-11-28 03:17:22,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7a82f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:22, skipping insertion in model container [2024-11-28 03:17:22,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:21" (2/3) ... [2024-11-28 03:17:22,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7a82f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:22, skipping insertion in model container [2024-11-28 03:17:22,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:22" (3/3) ... [2024-11-28 03:17:22,140 INFO L128 eAbstractionObserver]: Analyzing ICFG copysome1-2.i [2024-11-28 03:17:22,160 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:17:22,161 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG copysome1-2.i that has 1 procedures, 20 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 03:17:22,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:17:22,263 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;@12c6464b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:17:22,263 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:17:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:17:22,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:22,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:22,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:22,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1454435059, now seen corresponding path program 1 times [2024-11-28 03:17:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:22,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283001755] [2024-11-28 03:17:22,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:17:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:22,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:22,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283001755] [2024-11-28 03:17:22,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283001755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:17:22,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:17:22,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:17:22,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451372039] [2024-11-28 03:17:22,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:17:22,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:17:22,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:22,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:17:22,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:17:22,582 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:22,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:22,680 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2024-11-28 03:17:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:17:22,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 03:17:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:22,696 INFO L225 Difference]: With dead ends: 41 [2024-11-28 03:17:22,696 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 03:17:22,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:17:22,707 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:22,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:17:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 03:17:22,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-11-28 03:17:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-28 03:17:22,751 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-28 03:17:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:22,751 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-28 03:17:22,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-28 03:17:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:17:22,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:22,752 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:22,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:17:22,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:22,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1837939937, now seen corresponding path program 1 times [2024-11-28 03:17:22,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:22,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270720000] [2024-11-28 03:17:22,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:17:22,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:17:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270720000] [2024-11-28 03:17:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270720000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873578769] [2024-11-28 03:17:22,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:17:22,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:22,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:22,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:22,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:17:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:23,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:17:23,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:17:23,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:17:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873578769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:23,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:17:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060997316] [2024-11-28 03:17:23,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:23,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:17:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:23,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:17:23,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:17:23,225 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:23,345 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-11-28 03:17:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:17:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:17:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:23,347 INFO L225 Difference]: With dead ends: 46 [2024-11-28 03:17:23,347 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 03:17:23,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:17:23,349 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:23,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 34 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:17:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 03:17:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-28 03:17:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-11-28 03:17:23,357 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2024-11-28 03:17:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:23,357 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-11-28 03:17:23,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-28 03:17:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:17:23,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:23,359 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:23,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:23,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:23,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:23,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1882711501, now seen corresponding path program 2 times [2024-11-28 03:17:23,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:23,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339424587] [2024-11-28 03:17:23,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:17:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:23,669 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:17:23,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:17:24,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339424587] [2024-11-28 03:17:24,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339424587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198114267] [2024-11-28 03:17:24,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:17:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:24,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:24,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:24,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:17:24,216 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:17:24,217 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:24,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:17:24,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:17:24,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 03:17:24,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198114267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:24,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:24,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 03:17:24,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919680556] [2024-11-28 03:17:24,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:24,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:17:24,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:24,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:17:24,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:17:24,420 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:24,610 INFO L93 Difference]: Finished difference Result 85 states and 116 transitions. [2024-11-28 03:17:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:17:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:17:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:24,613 INFO L225 Difference]: With dead ends: 85 [2024-11-28 03:17:24,614 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 03:17:24,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:17:24,616 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:24,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 34 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:17:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 03:17:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-28 03:17:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-28 03:17:24,631 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 30 [2024-11-28 03:17:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:24,632 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-28 03:17:24,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-28 03:17:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 03:17:24,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:24,634 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:24,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:24,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:24,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:24,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:24,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2060060827, now seen corresponding path program 3 times [2024-11-28 03:17:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135292276] [2024-11-28 03:17:24,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:17:24,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:25,068 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:17:25,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:17:25,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:25,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135292276] [2024-11-28 03:17:25,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135292276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:25,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311230150] [2024-11-28 03:17:25,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:17:25,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:25,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:25,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:17:27,120 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 03:17:27,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:27,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:17:27,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:17:27,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:17:27,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311230150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:27,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:27,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 03:17:27,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656385925] [2024-11-28 03:17:27,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:27,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:17:27,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:27,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:17:27,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:17:27,653 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:28,054 INFO L93 Difference]: Finished difference Result 163 states and 224 transitions. [2024-11-28 03:17:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:17:28,055 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-28 03:17:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:28,057 INFO L225 Difference]: With dead ends: 163 [2024-11-28 03:17:28,059 INFO L226 Difference]: Without dead ends: 123 [2024-11-28 03:17:28,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:17:28,062 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 138 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:28,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 54 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:17:28,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-28 03:17:28,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-28 03:17:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2131147540983607) internal successors, (148), 122 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2024-11-28 03:17:28,083 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 60 [2024-11-28 03:17:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:28,083 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2024-11-28 03:17:28,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2024-11-28 03:17:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 03:17:28,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:28,087 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:28,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:28,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:28,288 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:28,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:28,288 INFO L85 PathProgramCache]: Analyzing trace with hash -678974827, now seen corresponding path program 4 times [2024-11-28 03:17:28,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:28,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288944083] [2024-11-28 03:17:28,289 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:17:28,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:28,386 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:17:28,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-28 03:17:30,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:30,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288944083] [2024-11-28 03:17:30,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288944083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:30,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195183331] [2024-11-28 03:17:30,027 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:17:30,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:30,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:30,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:30,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:17:30,880 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:17:30,881 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:30,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:17:30,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-28 03:17:31,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-28 03:17:32,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195183331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:32,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:17:32,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-11-28 03:17:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362696802] [2024-11-28 03:17:32,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:32,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 03:17:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:32,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 03:17:32,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:17:32,444 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 48 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 48 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:33,437 INFO L93 Difference]: Finished difference Result 319 states and 440 transitions. [2024-11-28 03:17:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 03:17:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 48 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-28 03:17:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:33,440 INFO L225 Difference]: With dead ends: 319 [2024-11-28 03:17:33,441 INFO L226 Difference]: Without dead ends: 243 [2024-11-28 03:17:33,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:17:33,443 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 334 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:33,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 34 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:17:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-28 03:17:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-28 03:17:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.2066115702479339) internal successors, (292), 242 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2024-11-28 03:17:33,477 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 120 [2024-11-28 03:17:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:33,477 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2024-11-28 03:17:33,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 48 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:17:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2024-11-28 03:17:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-28 03:17:33,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:33,484 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:33,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:33,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:33,685 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:33,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash -759475979, now seen corresponding path program 5 times [2024-11-28 03:17:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:33,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57476338] [2024-11-28 03:17:33,686 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:17:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:35,449 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 03:17:35,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2024-11-28 03:17:39,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57476338] [2024-11-28 03:17:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57476338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244352682] [2024-11-28 03:17:39,591 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:17:39,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:39,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:39,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:39,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4355f3a-5013-4975-b936-33cb5a06fbf1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process