./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/image_filter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/image_filter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC --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 7739edac33edee82d3c388da137105adbe48f8f59b0d45074d101ea06edef10e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:30:19,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:30:19,317 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:30:19,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:30:19,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:30:19,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:30:19,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:30:19,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:30:19,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:30:19,352 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:30:19,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:30:19,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:30:19,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:30:19,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:30:19,353 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:30:19,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:30:19,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:30:19,353 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:30:19,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:30:19,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:30:19,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:30:19,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:30:19,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:30:19,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:30:19,354 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:30:19,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:30:19,354 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:30:19,355 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:30:19,355 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:30:19,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:30:19,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:30:19,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:30:19,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:19,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:30:19,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:19,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:30:19,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:30:19,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:30:19,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:30:19,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:30:19,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:30:19,357 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_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC 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 -> 7739edac33edee82d3c388da137105adbe48f8f59b0d45074d101ea06edef10e [2024-11-23 18:30:19,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:30:19,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:30:19,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:30:19,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:30:19,663 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:30:19,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/float-benchs/image_filter.c [2024-11-23 18:30:23,015 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/data/d30b0798d/f133c3e2dc9141d78e7eacc8532746dd/FLAG064b9952a [2024-11-23 18:30:23,409 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:30:23,413 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/sv-benchmarks/c/float-benchs/image_filter.c [2024-11-23 18:30:23,433 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/data/d30b0798d/f133c3e2dc9141d78e7eacc8532746dd/FLAG064b9952a [2024-11-23 18:30:23,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/data/d30b0798d/f133c3e2dc9141d78e7eacc8532746dd [2024-11-23 18:30:23,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:30:23,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:30:23,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:30:23,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:30:23,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:30:23,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:23,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78417a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23, skipping insertion in model container [2024-11-23 18:30:23,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:23,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:30:23,692 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_86e8a3c1-4dd5-4213-997c-9d920c5528c9/sv-benchmarks/c/float-benchs/image_filter.c[564,577] [2024-11-23 18:30:23,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:30:23,806 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:30:23,819 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_86e8a3c1-4dd5-4213-997c-9d920c5528c9/sv-benchmarks/c/float-benchs/image_filter.c[564,577] [2024-11-23 18:30:23,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:30:23,944 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:30:23,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23 WrapperNode [2024-11-23 18:30:23,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:30:23,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:30:23,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:30:23,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:30:23,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:23,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,064 INFO L138 Inliner]: procedures = 21, calls = 695, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 567 [2024-11-23 18:30:24,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:30:24,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:30:24,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:30:24,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:30:24,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,099 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,140 INFO L175 MemorySlicer]: Split 428 memory accesses to 39 slices as follows [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 19, 3, 3, 19, 3, 3, 19, 3, 3, 19, 3, 19, 19, 2, 19, 19, 18, 19, 23, 19, 23, 19, 19, 22, 19, 17, 19]. 5 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 101 writes are split as follows [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 4, 4, 0, 4, 4, 4, 4, 6, 4, 6, 4, 4, 6, 4, 4, 4]. [2024-11-23 18:30:24,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,197 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:30:24,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:30:24,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:30:24,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:30:24,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (1/1) ... [2024-11-23 18:30:24,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:30:24,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:24,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:30:24,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:30:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:30:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure sobel [2024-11-23 18:30:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure sobel [2024-11-23 18:30:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure blur [2024-11-23 18:30:24,338 INFO L138 BoogieDeclarations]: Found implementation of procedure blur [2024-11-23 18:30:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:30:24,338 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:30:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:30:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:30:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:30:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:30:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:30:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:30:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 18:30:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#20 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#21 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#22 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#23 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#24 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#25 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#26 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#27 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#28 [2024-11-23 18:30:24,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#29 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#30 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#31 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#32 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#33 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#34 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#35 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#36 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#37 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#38 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-23 18:30:24,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2024-11-23 18:30:24,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2024-11-23 18:30:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2024-11-23 18:30:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2024-11-23 18:30:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#16 [2024-11-23 18:30:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#17 [2024-11-23 18:30:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#18 [2024-11-23 18:30:24,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#19 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#20 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#21 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#22 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#23 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#24 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#25 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#26 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#27 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#28 [2024-11-23 18:30:24,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#29 [2024-11-23 18:30:24,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#30 [2024-11-23 18:30:24,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#31 [2024-11-23 18:30:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#32 [2024-11-23 18:30:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#33 [2024-11-23 18:30:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#34 [2024-11-23 18:30:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#35 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#36 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#37 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#38 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure filter [2024-11-23 18:30:24,350 INFO L138 BoogieDeclarations]: Found implementation of procedure filter [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-11-23 18:30:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#16 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#17 [2024-11-23 18:30:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#18 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#19 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#20 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#21 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#22 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#23 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#24 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#25 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#26 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#27 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#28 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#29 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#30 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#31 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#32 [2024-11-23 18:30:24,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#33 [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#34 [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#35 [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#36 [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#37 [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#38 [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:30:24,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 18:30:24,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure sobelitereen [2024-11-23 18:30:24,356 INFO L138 BoogieDeclarations]: Found implementation of procedure sobelitereen [2024-11-23 18:30:24,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 18:30:24,793 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:30:24,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:30:27,087 INFO L? ?]: Removed 171 outVars from TransFormulas that were not future-live. [2024-11-23 18:30:27,088 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:30:27,103 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:30:27,103 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 18:30:27,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:30:27 BoogieIcfgContainer [2024-11-23 18:30:27,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:30:27,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:30:27,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:30:27,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:30:27,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:30:23" (1/3) ... [2024-11-23 18:30:27,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e26db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:30:27, skipping insertion in model container [2024-11-23 18:30:27,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:30:23" (2/3) ... [2024-11-23 18:30:27,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e26db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:30:27, skipping insertion in model container [2024-11-23 18:30:27,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:30:27" (3/3) ... [2024-11-23 18:30:27,115 INFO L128 eAbstractionObserver]: Analyzing ICFG image_filter.c [2024-11-23 18:30:27,135 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:30:27,136 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG image_filter.c that has 7 procedures, 195 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:30:27,210 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:30:27,225 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;@3d6d8861, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:30:27,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:30:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 116 states have internal predecessors, (142), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 18:30:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2024-11-23 18:30:27,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:27,346 INFO L218 NwaCegarLoop]: trace histogram [266, 266, 40, 40, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:27,347 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:27,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1343348182, now seen corresponding path program 1 times [2024-11-23 18:30:27,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:27,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097235225] [2024-11-23 18:30:27,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:27,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 111861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111861 trivial. 0 not checked. [2024-11-23 18:30:33,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:33,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097235225] [2024-11-23 18:30:33,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097235225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:33,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:30:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972577262] [2024-11-23 18:30:33,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:33,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:30:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:33,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:30:33,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:30:33,839 INFO L87 Difference]: Start difference. First operand has 195 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 116 states have internal predecessors, (142), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-23 18:30:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:33,949 INFO L93 Difference]: Finished difference Result 381 states and 581 transitions. [2024-11-23 18:30:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:30:33,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 1618 [2024-11-23 18:30:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:33,984 INFO L225 Difference]: With dead ends: 381 [2024-11-23 18:30:33,985 INFO L226 Difference]: Without dead ends: 191 [2024-11-23 18:30:33,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:30:34,002 INFO L435 NwaCegarLoop]: 283 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, 283 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 [2024-11-23 18:30:34,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:30:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-23 18:30:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-23 18:30:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 113 states have internal predecessors, (136), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-23 18:30:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 279 transitions. [2024-11-23 18:30:34,104 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 279 transitions. Word has length 1618 [2024-11-23 18:30:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:34,117 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 279 transitions. [2024-11-23 18:30:34,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-23 18:30:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 279 transitions. [2024-11-23 18:30:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2024-11-23 18:30:34,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:34,236 INFO L218 NwaCegarLoop]: trace histogram [266, 266, 40, 40, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:34,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:30:34,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:34,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2096312460, now seen corresponding path program 1 times [2024-11-23 18:30:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380612579] [2024-11-23 18:30:34,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 111861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111861 trivial. 0 not checked. [2024-11-23 18:30:40,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:40,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380612579] [2024-11-23 18:30:40,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380612579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:40,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:30:40,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:30:40,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97728174] [2024-11-23 18:30:40,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:40,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:30:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:40,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:30:40,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:30:40,270 INFO L87 Difference]: Start difference. First operand 191 states and 279 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-23 18:30:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:40,534 INFO L93 Difference]: Finished difference Result 267 states and 399 transitions. [2024-11-23 18:30:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:30:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 1618 [2024-11-23 18:30:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:40,549 INFO L225 Difference]: With dead ends: 267 [2024-11-23 18:30:40,551 INFO L226 Difference]: Without dead ends: 204 [2024-11-23 18:30:40,555 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 [2024-11-23 18:30:40,556 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 11 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:40,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 551 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:30:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-23 18:30:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2024-11-23 18:30:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 114 states have internal predecessors, (137), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-23 18:30:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 280 transitions. [2024-11-23 18:30:40,609 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 280 transitions. Word has length 1618 [2024-11-23 18:30:40,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:40,618 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 280 transitions. [2024-11-23 18:30:40,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-23 18:30:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 280 transitions. [2024-11-23 18:30:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2347 [2024-11-23 18:30:40,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:40,718 INFO L218 NwaCegarLoop]: trace histogram [380, 380, 60, 60, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:40,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:30:40,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:40,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash 27908517, now seen corresponding path program 1 times [2024-11-23 18:30:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:40,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485420687] [2024-11-23 18:30:40,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:40,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 229308 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 229307 trivial. 0 not checked. [2024-11-23 18:30:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485420687] [2024-11-23 18:30:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485420687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203204167] [2024-11-23 18:30:49,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:49,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:49,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:49,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:30:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:57,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 21504 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:57,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 229308 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 229307 trivial. 0 not checked. [2024-11-23 18:30:58,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 229308 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 229307 trivial. 0 not checked. [2024-11-23 18:31:03,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203204167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:31:03,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:31:03,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 18:31:03,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483321012] [2024-11-23 18:31:03,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:31:03,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:31:03,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:03,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:31:03,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:03,839 INFO L87 Difference]: Start difference. First operand 192 states and 280 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 5 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2024-11-23 18:31:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:04,180 INFO L93 Difference]: Finished difference Result 294 states and 442 transitions. [2024-11-23 18:31:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:31:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 5 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) Word has length 2346 [2024-11-23 18:31:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:04,197 INFO L225 Difference]: With dead ends: 294 [2024-11-23 18:31:04,197 INFO L226 Difference]: Without dead ends: 231 [2024-11-23 18:31:04,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4694 GetRequests, 4689 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:31:04,199 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 46 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:04,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 577 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:31:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-23 18:31:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-23 18:31:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 140 states have (on average 1.2357142857142858) internal successors, (173), 141 states have internal predecessors, (173), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-23 18:31:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 340 transitions. [2024-11-23 18:31:04,235 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 340 transitions. Word has length 2346 [2024-11-23 18:31:04,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:04,239 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 340 transitions. [2024-11-23 18:31:04,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 5 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (61), 4 states have call predecessors, (61), 4 states have call successors, (61) [2024-11-23 18:31:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 340 transitions. [2024-11-23 18:31:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4531 [2024-11-23 18:31:04,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:04,438 INFO L218 NwaCegarLoop]: trace histogram [722, 722, 120, 120, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:04,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:31:04,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:04,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:31:04,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:31:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 51405552, now seen corresponding path program 2 times [2024-11-23 18:31:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:31:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793235108] [2024-11-23 18:31:04,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:31:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:31:07,987 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:31:07,987 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:31:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 832257 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 832175 trivial. 0 not checked. [2024-11-23 18:31:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:31:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793235108] [2024-11-23 18:31:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793235108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:31:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122772878] [2024-11-23 18:31:19,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:31:19,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:31:19,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:31:19,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:31:19,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:31:51,298 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:31:51,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:31:51,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 41172 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:31:51,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 832257 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 832175 trivial. 0 not checked. [2024-11-23 18:31:52,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:32:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 832257 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 832175 trivial. 0 not checked. [2024-11-23 18:32:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122772878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:32:00,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:32:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-23 18:32:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227672076] [2024-11-23 18:32:00,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:32:00,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 18:32:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:00,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 18:32:00,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:32:00,140 INFO L87 Difference]: Start difference. First operand 231 states and 340 transitions. Second operand has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 11 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 10 states have call predecessors, (85), 10 states have call successors, (85) [2024-11-23 18:32:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:32:01,049 INFO L93 Difference]: Finished difference Result 372 states and 565 transitions. [2024-11-23 18:32:01,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:32:01,050 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 11 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 10 states have call predecessors, (85), 10 states have call successors, (85) Word has length 4530 [2024-11-23 18:32:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:32:01,062 INFO L225 Difference]: With dead ends: 372 [2024-11-23 18:32:01,062 INFO L226 Difference]: Without dead ends: 309 [2024-11-23 18:32:01,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9065 GetRequests, 9054 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:32:01,064 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 64 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:32:01,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1667 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 18:32:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-23 18:32:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2024-11-23 18:32:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 194 states have (on average 1.2628865979381443) internal successors, (245), 195 states have internal predecessors, (245), 108 states have call successors, (108), 6 states have call predecessors, (108), 6 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-23 18:32:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 460 transitions. [2024-11-23 18:32:01,090 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 460 transitions. Word has length 4530 [2024-11-23 18:32:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:32:01,096 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 460 transitions. [2024-11-23 18:32:01,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 11 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (85), 10 states have call predecessors, (85), 10 states have call successors, (85) [2024-11-23 18:32:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 460 transitions. [2024-11-23 18:32:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8899 [2024-11-23 18:32:01,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:32:01,673 INFO L218 NwaCegarLoop]: trace histogram [1406, 1406, 240, 240, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 74, 30, 30, 30, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:32:01,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:32:01,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e8a3c1-4dd5-4213-997c-9d920c5528c9/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:01,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:01,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1552086150, now seen corresponding path program 3 times [2024-11-23 18:32:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:01,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010719139] [2024-11-23 18:32:01,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 18:32:01,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms