./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.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_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/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_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/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_984e9e92-7cb3-4453-afc2-57ed36e30906/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 d4c01a47dc31629e1ec0def54316b25eff06264ad83d582c32aaab21e4dd61f6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:20:37,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:20:37,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:20:37,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:20:37,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:20:37,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:20:37,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:20:37,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:20:37,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:20:37,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:20:37,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:20:37,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:20:37,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:20:37,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:20:37,612 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:20:37,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:20:37,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:20:37,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:20:37,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:20:37,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:20:37,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:20:37,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:20:37,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:20:37,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:20:37,613 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:20:37,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:20:37,613 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:20:37,613 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:20:37,615 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:20:37,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:37,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:37,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:37,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:37,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:20:37,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:20:37,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:20:37,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:20:37,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:37,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:20:37,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:20:37,617 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:20:37,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:20:37,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:20:37,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:20:37,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:20:37,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:20:37,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:20:37,618 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:20:37,618 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_984e9e92-7cb3-4453-afc2-57ed36e30906/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 -> d4c01a47dc31629e1ec0def54316b25eff06264ad83d582c32aaab21e4dd61f6 [2024-11-28 05:20:38,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:20:38,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:20:38,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:20:38,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:20:38,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:20:38,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i [2024-11-28 05:20:41,911 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/data/4e9935e33/b66525709e8d4d02ad8b572e10ade330/FLAG05df46ca5 [2024-11-28 05:20:42,291 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:20:42,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i [2024-11-28 05:20:42,304 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/data/4e9935e33/b66525709e8d4d02ad8b572e10ade330/FLAG05df46ca5 [2024-11-28 05:20:42,503 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/data/4e9935e33/b66525709e8d4d02ad8b572e10ade330 [2024-11-28 05:20:42,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:20:42,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:20:42,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:42,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:20:42,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:20:42,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:42" (1/1) ... [2024-11-28 05:20:42,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0651dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:42, skipping insertion in model container [2024-11-28 05:20:42,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:20:42" (1/1) ... [2024-11-28 05:20:42,565 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:20:42,789 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_984e9e92-7cb3-4453-afc2-57ed36e30906/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i[916,929] [2024-11-28 05:20:42,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:42,928 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:20:42,949 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_984e9e92-7cb3-4453-afc2-57ed36e30906/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-6.i[916,929] [2024-11-28 05:20:43,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:20:43,070 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:20:43,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43 WrapperNode [2024-11-28 05:20:43,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:20:43,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:43,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:20:43,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:20:43,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,147 INFO L138 Inliner]: procedures = 29, calls = 170, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 532 [2024-11-28 05:20:43,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:20:43,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:20:43,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:20:43,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:20:43,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,197 INFO L175 MemorySlicer]: Split 135 memory accesses to 6 slices as follows [2, 16, 32, 28, 21, 36]. 27 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 3, 4, 3, 3, 3]. The 18 writes are split as follows [0, 3, 4, 3, 4, 4]. [2024-11-28 05:20:43,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,223 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,225 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:20:43,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:20:43,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:20:43,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:20:43,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (1/1) ... [2024-11-28 05:20:43,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:20:43,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:43,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:20:43,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:20:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:20:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:20:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:20:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-28 05:20:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 05:20:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:20:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:20:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:20:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:20:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:20:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 05:20:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 05:20:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:20:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:20:43,643 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:20:43,646 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:20:44,643 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-28 05:20:44,644 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:20:44,666 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:20:44,666 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:20:44,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:44 BoogieIcfgContainer [2024-11-28 05:20:44,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:20:44,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:20:44,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:20:44,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:20:44,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:20:42" (1/3) ... [2024-11-28 05:20:44,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7a8cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:44, skipping insertion in model container [2024-11-28 05:20:44,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:20:43" (2/3) ... [2024-11-28 05:20:44,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7a8cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:20:44, skipping insertion in model container [2024-11-28 05:20:44,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:20:44" (3/3) ... [2024-11-28 05:20:44,685 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-6.i [2024-11-28 05:20:44,708 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:20:44,711 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-6.i that has 2 procedures, 122 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:20:44,817 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:20:44,840 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;@e0b5215, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:20:44,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:20:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 05:20:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 05:20:44,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:44,870 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:44,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:44,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -607756942, now seen corresponding path program 1 times [2024-11-28 05:20:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80422363] [2024-11-28 05:20:44,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:44,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-28 05:20:45,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80422363] [2024-11-28 05:20:45,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80422363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:45,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466559448] [2024-11-28 05:20:45,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:45,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:45,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:45,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:45,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:20:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:46,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:20:46,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-28 05:20:46,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:20:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466559448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:20:46,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:20:46,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079612134] [2024-11-28 05:20:46,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:46,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:20:46,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:46,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:20:46,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:20:46,114 INFO L87 Difference]: Start difference. First operand has 122 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:20:46,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:46,175 INFO L93 Difference]: Finished difference Result 237 states and 371 transitions. [2024-11-28 05:20:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:20:46,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2024-11-28 05:20:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:46,190 INFO L225 Difference]: With dead ends: 237 [2024-11-28 05:20:46,190 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 05:20:46,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:20:46,200 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:46,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:20:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 05:20:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-28 05:20:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 97 states have internal predecessors, (134), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 05:20:46,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 172 transitions. [2024-11-28 05:20:46,289 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 172 transitions. Word has length 158 [2024-11-28 05:20:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:46,289 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 172 transitions. [2024-11-28 05:20:46,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:20:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 172 transitions. [2024-11-28 05:20:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 05:20:46,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:46,299 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:46,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:20:46,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:20:46,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:46,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1715716112, now seen corresponding path program 1 times [2024-11-28 05:20:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:46,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252073040] [2024-11-28 05:20:46,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:46,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-28 05:20:47,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252073040] [2024-11-28 05:20:47,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252073040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:47,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:47,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:20:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907142667] [2024-11-28 05:20:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:47,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:47,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:47,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:47,177 INFO L87 Difference]: Start difference. First operand 118 states and 172 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:20:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:47,276 INFO L93 Difference]: Finished difference Result 235 states and 344 transitions. [2024-11-28 05:20:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2024-11-28 05:20:47,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:47,280 INFO L225 Difference]: With dead ends: 235 [2024-11-28 05:20:47,280 INFO L226 Difference]: Without dead ends: 120 [2024-11-28 05:20:47,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:47,286 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:47,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 499 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:20:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-28 05:20:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-28 05:20:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 99 states have (on average 1.3737373737373737) internal successors, (136), 99 states have internal predecessors, (136), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 05:20:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 174 transitions. [2024-11-28 05:20:47,325 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 174 transitions. Word has length 158 [2024-11-28 05:20:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:47,327 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 174 transitions. [2024-11-28 05:20:47,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:20:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 174 transitions. [2024-11-28 05:20:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 05:20:47,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:47,337 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:47,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:20:47,338 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:47,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash -931888242, now seen corresponding path program 1 times [2024-11-28 05:20:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:47,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299514773] [2024-11-28 05:20:47,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:47,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-28 05:20:47,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:47,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299514773] [2024-11-28 05:20:47,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299514773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:47,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:47,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:20:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058618800] [2024-11-28 05:20:47,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:47,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:20:47,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:47,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:20:47,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:20:47,975 INFO L87 Difference]: Start difference. First operand 120 states and 174 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 05:20:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:48,034 INFO L93 Difference]: Finished difference Result 237 states and 345 transitions. [2024-11-28 05:20:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:20:48,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2024-11-28 05:20:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:48,039 INFO L225 Difference]: With dead ends: 237 [2024-11-28 05:20:48,041 INFO L226 Difference]: Without dead ends: 120 [2024-11-28 05:20:48,042 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 05:20:48,044 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:48,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:20:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-28 05:20:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-28 05:20:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 99 states have internal predecessors, (135), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 05:20:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 173 transitions. [2024-11-28 05:20:48,074 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 173 transitions. Word has length 158 [2024-11-28 05:20:48,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:48,077 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 173 transitions. [2024-11-28 05:20:48,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 05:20:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 173 transitions. [2024-11-28 05:20:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 05:20:48,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:48,080 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:48,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:20:48,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:48,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:48,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1674135312, now seen corresponding path program 1 times [2024-11-28 05:20:48,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:48,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139198499] [2024-11-28 05:20:48,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:48,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-28 05:20:48,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:48,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139198499] [2024-11-28 05:20:48,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139198499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:48,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568495884] [2024-11-28 05:20:48,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:48,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:48,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:48,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:20:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:49,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:20:49,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-28 05:20:49,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:20:49,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568495884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:49,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:20:49,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-28 05:20:49,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262255681] [2024-11-28 05:20:49,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:49,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:49,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:49,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:49,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:20:49,126 INFO L87 Difference]: Start difference. First operand 120 states and 173 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 05:20:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:49,188 INFO L93 Difference]: Finished difference Result 239 states and 346 transitions. [2024-11-28 05:20:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2024-11-28 05:20:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:49,193 INFO L225 Difference]: With dead ends: 239 [2024-11-28 05:20:49,196 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 05:20:49,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:20:49,198 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:49,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 496 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:20:49,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 05:20:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-28 05:20:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.3564356435643565) internal successors, (137), 101 states have internal predecessors, (137), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 05:20:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 175 transitions. [2024-11-28 05:20:49,220 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 175 transitions. Word has length 158 [2024-11-28 05:20:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:49,221 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 175 transitions. [2024-11-28 05:20:49,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 05:20:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 175 transitions. [2024-11-28 05:20:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 05:20:49,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:49,226 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:49,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:20:49,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984e9e92-7cb3-4453-afc2-57ed36e30906/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:49,427 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:49,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1776006338, now seen corresponding path program 1 times [2024-11-28 05:20:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729787194] [2024-11-28 05:20:49,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-28 05:20:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:50,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729787194] [2024-11-28 05:20:50,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729787194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:50,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:50,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:20:50,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245605269] [2024-11-28 05:20:50,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:50,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:20:50,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:50,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:20:50,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:50,006 INFO L87 Difference]: Start difference. First operand 122 states and 175 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 05:20:50,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:50,101 INFO L93 Difference]: Finished difference Result 241 states and 347 transitions. [2024-11-28 05:20:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:20:50,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 160 [2024-11-28 05:20:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:50,107 INFO L225 Difference]: With dead ends: 241 [2024-11-28 05:20:50,107 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 05:20:50,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:20:50,111 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:50,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:20:50,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 05:20:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-28 05:20:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 101 states have internal predecessors, (136), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 05:20:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 174 transitions. [2024-11-28 05:20:50,134 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 174 transitions. Word has length 160 [2024-11-28 05:20:50,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:50,137 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 174 transitions. [2024-11-28 05:20:50,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 05:20:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 174 transitions. [2024-11-28 05:20:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 05:20:50,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:50,140 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:50,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:20:50,141 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:50,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:50,142 INFO L85 PathProgramCache]: Analyzing trace with hash 187658436, now seen corresponding path program 1 times [2024-11-28 05:20:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:50,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019929421] [2024-11-28 05:20:50,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-28 05:20:52,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:52,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019929421] [2024-11-28 05:20:52,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019929421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:52,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:52,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:20:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33629473] [2024-11-28 05:20:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:52,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:20:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:52,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:20:52,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:20:52,418 INFO L87 Difference]: Start difference. First operand 122 states and 174 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:20:53,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:53,220 INFO L93 Difference]: Finished difference Result 348 states and 497 transitions. [2024-11-28 05:20:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:20:53,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 160 [2024-11-28 05:20:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:53,227 INFO L225 Difference]: With dead ends: 348 [2024-11-28 05:20:53,228 INFO L226 Difference]: Without dead ends: 229 [2024-11-28 05:20:53,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:20:53,233 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 286 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:53,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1134 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:20:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-28 05:20:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2024-11-28 05:20:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 190 states have (on average 1.3473684210526315) internal successors, (256), 191 states have internal predecessors, (256), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 05:20:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 322 transitions. [2024-11-28 05:20:53,285 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 322 transitions. Word has length 160 [2024-11-28 05:20:53,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:53,290 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 322 transitions. [2024-11-28 05:20:53,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:20:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 322 transitions. [2024-11-28 05:20:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 05:20:53,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:53,295 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:53,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:20:53,295 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:53,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -938376661, now seen corresponding path program 1 times [2024-11-28 05:20:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:53,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732415241] [2024-11-28 05:20:53,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat