./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:16:20,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:16:20,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:16:20,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:16:20,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:16:20,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:16:20,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:16:20,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:16:20,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:16:20,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:16:20,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:16:20,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:16:20,722 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:16:20,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:16:20,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:16:20,725 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:16:20,726 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:16:20,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:16:20,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:16:20,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:16:20,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:16:20,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:16:20,730 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:16:20,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:16:20,731 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:16:20,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:16:20,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:16:20,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:16:20,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:16:20,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:16:20,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:16:20,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:16:20,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:16:20,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:16:20,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:16:20,740 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:16:20,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:16:20,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:16:20,741 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:16:20,741 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2023-11-06 22:16:21,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:16:21,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:16:21,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:16:21,134 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:16:21,134 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:16:21,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2023-11-06 22:16:24,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:16:24,729 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:16:24,729 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2023-11-06 22:16:24,740 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/data/5d4386ff8/22aa7b2bcf0d4f53800d7aa4b44c5389/FLAG5f6b23937 [2023-11-06 22:16:24,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/data/5d4386ff8/22aa7b2bcf0d4f53800d7aa4b44c5389 [2023-11-06 22:16:24,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:16:24,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:16:24,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:24,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:16:24,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:16:24,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:24" (1/1) ... [2023-11-06 22:16:24,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27fbd0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:24, skipping insertion in model container [2023-11-06 22:16:24,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:16:24" (1/1) ... [2023-11-06 22:16:24,809 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:16:25,066 WARN L240 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_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2023-11-06 22:16:25,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:25,148 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:16:25,170 WARN L240 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_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2023-11-06 22:16:25,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:16:25,284 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:16:25,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25 WrapperNode [2023-11-06 22:16:25,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:16:25,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:25,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:16:25,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:16:25,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,393 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 159 [2023-11-06 22:16:25,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:16:25,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:16:25,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:16:25,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:16:25,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:16:25,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:16:25,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:16:25,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:16:25,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (1/1) ... [2023-11-06 22:16:25,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:16:25,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:25,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:16:25,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:16:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:16:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:16:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:16:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:16:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:16:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:16:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:16:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:16:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:16:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:16:25,683 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:16:25,686 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:16:26,029 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:16:26,037 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:16:26,038 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-06 22:16:26,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:26 BoogieIcfgContainer [2023-11-06 22:16:26,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:16:26,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:16:26,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:16:26,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:16:26,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:16:24" (1/3) ... [2023-11-06 22:16:26,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2ebbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:26, skipping insertion in model container [2023-11-06 22:16:26,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:16:25" (2/3) ... [2023-11-06 22:16:26,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2ebbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:16:26, skipping insertion in model container [2023-11-06 22:16:26,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:26" (3/3) ... [2023-11-06 22:16:26,052 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2023-11-06 22:16:26,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:16:26,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:16:26,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:16:26,144 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@5877def1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:16:26,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:16:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:16:26,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 22:16:26,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:26,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:26,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:26,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:26,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1977750346, now seen corresponding path program 1 times [2023-11-06 22:16:26,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:26,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203415495] [2023-11-06 22:16:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:26,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:26,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:26,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203415495] [2023-11-06 22:16:26,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203415495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:26,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:26,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907157133] [2023-11-06 22:16:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:26,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:16:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:16:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:26,527 INFO L87 Difference]: Start difference. First operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:26,659 INFO L93 Difference]: Finished difference Result 129 states and 206 transitions. [2023-11-06 22:16:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:16:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 22:16:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:26,670 INFO L225 Difference]: With dead ends: 129 [2023-11-06 22:16:26,670 INFO L226 Difference]: Without dead ends: 79 [2023-11-06 22:16:26,673 INFO L412 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 [2023-11-06 22:16:26,677 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 38 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:26,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 88 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:16:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-06 22:16:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 45. [2023-11-06 22:16:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:16:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2023-11-06 22:16:26,719 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 10 [2023-11-06 22:16:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:26,719 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2023-11-06 22:16:26,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:26,720 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2023-11-06 22:16:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 22:16:26,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:26,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:26,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:16:26,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:26,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:26,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1322552780, now seen corresponding path program 1 times [2023-11-06 22:16:26,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:26,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854079432] [2023-11-06 22:16:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:26,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854079432] [2023-11-06 22:16:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854079432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893927261] [2023-11-06 22:16:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:26,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:26,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:26,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:26,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:16:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:26,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:16:26,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:26,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:16:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893927261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:27,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 22:16:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842968861] [2023-11-06 22:16:27,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:16:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:16:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:16:27,011 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:27,270 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions. [2023-11-06 22:16:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:16:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 22:16:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:27,284 INFO L225 Difference]: With dead ends: 223 [2023-11-06 22:16:27,312 INFO L226 Difference]: Without dead ends: 183 [2023-11-06 22:16:27,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:16:27,315 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 210 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:27,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 196 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:16:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-06 22:16:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 51. [2023-11-06 22:16:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:16:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-11-06 22:16:27,345 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 12 [2023-11-06 22:16:27,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:27,345 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-11-06 22:16:27,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-11-06 22:16:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:16:27,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:27,347 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:27,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:27,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:27,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:27,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash -201790894, now seen corresponding path program 2 times [2023-11-06 22:16:27,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:27,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424011615] [2023-11-06 22:16:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:27,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:16:27,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:27,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424011615] [2023-11-06 22:16:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424011615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:27,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:27,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:27,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2583018] [2023-11-06 22:16:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:27,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:27,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:27,718 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:27,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:27,770 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2023-11-06 22:16:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:27,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 22:16:27,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:27,772 INFO L225 Difference]: With dead ends: 98 [2023-11-06 22:16:27,772 INFO L226 Difference]: Without dead ends: 57 [2023-11-06 22:16:27,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:27,774 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 41 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:27,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 71 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-06 22:16:27,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-11-06 22:16:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:16:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-11-06 22:16:27,784 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 18 [2023-11-06 22:16:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:27,784 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-11-06 22:16:27,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-11-06 22:16:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:16:27,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:27,786 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:27,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:16:27,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:27,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash 8512802, now seen corresponding path program 1 times [2023-11-06 22:16:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916657216] [2023-11-06 22:16:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:16:27,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:27,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916657216] [2023-11-06 22:16:27,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916657216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:27,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:27,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:16:27,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528189792] [2023-11-06 22:16:27,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:27,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:16:27,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:27,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:16:27,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:16:27,943 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:27,982 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2023-11-06 22:16:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:16:27,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-06 22:16:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:27,984 INFO L225 Difference]: With dead ends: 117 [2023-11-06 22:16:27,984 INFO L226 Difference]: Without dead ends: 77 [2023-11-06 22:16:27,985 INFO L412 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 [2023-11-06 22:16:27,987 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:27,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-06 22:16:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2023-11-06 22:16:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:16:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2023-11-06 22:16:28,002 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 29 [2023-11-06 22:16:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:28,002 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2023-11-06 22:16:28,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:28,003 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2023-11-06 22:16:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:16:28,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:28,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:28,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:16:28,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:28,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:28,010 INFO L85 PathProgramCache]: Analyzing trace with hash 383662240, now seen corresponding path program 1 times [2023-11-06 22:16:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111367644] [2023-11-06 22:16:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:16:28,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:28,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111367644] [2023-11-06 22:16:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111367644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635820708] [2023-11-06 22:16:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:28,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:28,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:28,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:16:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:28,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:16:28,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:16:28,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:16:28,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635820708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:28,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:28,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-11-06 22:16:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126729467] [2023-11-06 22:16:28,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:28,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:16:28,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:28,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:16:28,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:16:28,407 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:29,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:29,315 INFO L93 Difference]: Finished difference Result 623 states and 861 transitions. [2023-11-06 22:16:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-06 22:16:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-06 22:16:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:29,322 INFO L225 Difference]: With dead ends: 623 [2023-11-06 22:16:29,323 INFO L226 Difference]: Without dead ends: 577 [2023-11-06 22:16:29,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:16:29,326 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1401 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:29,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 317 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:16:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-06 22:16:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 88. [2023-11-06 22:16:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 83 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:16:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2023-11-06 22:16:29,366 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 31 [2023-11-06 22:16:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:29,367 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2023-11-06 22:16:29,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:29,368 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2023-11-06 22:16:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 22:16:29,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:29,370 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:29,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:29,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:29,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:29,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1437829230, now seen corresponding path program 2 times [2023-11-06 22:16:29,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:29,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332527631] [2023-11-06 22:16:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-06 22:16:29,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332527631] [2023-11-06 22:16:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332527631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:29,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:29,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911160998] [2023-11-06 22:16:29,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:29,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:29,837 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:29,875 INFO L93 Difference]: Finished difference Result 153 states and 192 transitions. [2023-11-06 22:16:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-06 22:16:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:29,877 INFO L225 Difference]: With dead ends: 153 [2023-11-06 22:16:29,877 INFO L226 Difference]: Without dead ends: 114 [2023-11-06 22:16:29,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:29,883 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 19 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:29,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 171 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-06 22:16:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2023-11-06 22:16:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:16:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2023-11-06 22:16:29,912 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 45 [2023-11-06 22:16:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:29,914 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2023-11-06 22:16:29,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2023-11-06 22:16:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 22:16:29,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:29,916 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:16:29,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:29,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 311045192, now seen corresponding path program 1 times [2023-11-06 22:16:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:29,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291925840] [2023-11-06 22:16:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-06 22:16:30,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:30,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291925840] [2023-11-06 22:16:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291925840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:16:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946830641] [2023-11-06 22:16:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:30,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:16:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:16:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:16:30,147 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:30,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:30,172 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2023-11-06 22:16:30,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:16:30,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-06 22:16:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:30,175 INFO L225 Difference]: With dead ends: 100 [2023-11-06 22:16:30,176 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:16:30,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:16:30,180 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:30,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:16:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:16:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:16:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:16:30,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2023-11-06 22:16:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:30,184 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:16:30,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:16:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:16:30,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:16:30,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:16:30,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:16:30,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:16:30,380 INFO L895 garLoopResultBuilder]: At program point insert_returnLabel#1(lines 16 19) the Hoare annotation is: false [2023-11-06 22:16:30,380 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed. [2023-11-06 22:16:30,381 INFO L899 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2023-11-06 22:16:30,381 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 27 67) the Hoare annotation is: true [2023-11-06 22:16:30,381 INFO L895 garLoopResultBuilder]: At program point elem_exists_returnLabel#1(lines 20 26) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= 0 |ULTIMATE.start_elem_exists_#res#1|) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-11-06 22:16:30,381 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:16:30,382 INFO L899 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2023-11-06 22:16:30,382 INFO L895 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-11-06 22:16:30,382 INFO L899 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2023-11-06 22:16:30,382 INFO L899 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2023-11-06 22:16:30,382 INFO L895 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2023-11-06 22:16:30,382 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:16:30,383 INFO L895 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false [2023-11-06 22:16:30,383 INFO L899 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed. [2023-11-06 22:16:30,383 INFO L899 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2023-11-06 22:16:30,383 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2023-11-06 22:16:30,383 INFO L895 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-11-06 22:16:30,384 INFO L895 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-11-06 22:16:30,384 INFO L899 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2023-11-06 22:16:30,384 INFO L899 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2023-11-06 22:16:30,384 INFO L895 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-11-06 22:16:30,384 INFO L899 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2023-11-06 22:16:30,384 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2023-11-06 22:16:30,385 INFO L895 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-11-06 22:16:30,385 INFO L899 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2023-11-06 22:16:30,385 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2023-11-06 22:16:30,385 INFO L899 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2023-11-06 22:16:30,385 INFO L895 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2023-11-06 22:16:30,385 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-06 22:16:30,386 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2023-11-06 22:16:30,386 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:16:30,386 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false [2023-11-06 22:16:30,386 INFO L899 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2023-11-06 22:16:30,386 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2023-11-06 22:16:30,386 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-11-06 22:16:30,387 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:16:30,387 INFO L899 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2023-11-06 22:16:30,387 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| 0) [2023-11-06 22:16:30,387 INFO L899 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2023-11-06 22:16:30,387 INFO L899 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2023-11-06 22:16:30,387 INFO L895 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2023-11-06 22:16:30,388 INFO L899 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2023-11-06 22:16:30,388 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2023-11-06 22:16:30,388 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2023-11-06 22:16:30,388 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2023-11-06 22:16:30,388 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2023-11-06 22:16:30,388 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 13) the Hoare annotation is: true [2023-11-06 22:16:30,389 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-11-06 22:16:30,392 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-11-06 22:16:30,395 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:16:30,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:16:30 BoogieIcfgContainer [2023-11-06 22:16:30,410 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:16:30,410 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:16:30,410 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:16:30,412 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:16:30,412 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:16:26" (3/4) ... [2023-11-06 22:16:30,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:16:30,419 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-06 22:16:30,429 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 22:16:30,430 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-06 22:16:30,430 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:16:30,431 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:16:30,471 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((size == 0) && (i == 0)) && (0 == \result)) && (n == 0)) && (x == 0)) [2023-11-06 22:16:30,520 WARN L115 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((size == 0) && (i == 0)) && (0 == \result)) && (n == 0)) && (x == 0)) [2023-11-06 22:16:30,575 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:16:30,579 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:16:30,579 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:16:30,580 INFO L158 Benchmark]: Toolchain (without parser) took 5815.02ms. Allocated memory was 176.2MB in the beginning and 220.2MB in the end (delta: 44.0MB). Free memory was 112.4MB in the beginning and 70.5MB in the end (delta: 42.0MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. [2023-11-06 22:16:30,581 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory was 99.0MB in the beginning and 98.9MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:30,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.65ms. Allocated memory is still 176.2MB. Free memory was 112.1MB in the beginning and 146.7MB in the end (delta: -34.6MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2023-11-06 22:16:30,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.21ms. Allocated memory is still 176.2MB. Free memory was 146.7MB in the beginning and 144.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:16:30,582 INFO L158 Benchmark]: Boogie Preprocessor took 77.19ms. Allocated memory is still 176.2MB. Free memory was 144.9MB in the beginning and 143.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:16:30,583 INFO L158 Benchmark]: RCFGBuilder took 566.74ms. Allocated memory is still 176.2MB. Free memory was 142.8MB in the beginning and 128.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:16:30,583 INFO L158 Benchmark]: TraceAbstraction took 4366.35ms. Allocated memory was 176.2MB in the beginning and 220.2MB in the end (delta: 44.0MB). Free memory was 127.5MB in the beginning and 75.7MB in the end (delta: 51.8MB). Peak memory consumption was 98.2MB. Max. memory is 16.1GB. [2023-11-06 22:16:30,584 INFO L158 Benchmark]: Witness Printer took 169.20ms. Allocated memory is still 220.2MB. Free memory was 75.7MB in the beginning and 70.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:16:30,587 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory was 99.0MB in the beginning and 98.9MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.65ms. Allocated memory is still 176.2MB. Free memory was 112.1MB in the beginning and 146.7MB in the end (delta: -34.6MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.21ms. Allocated memory is still 176.2MB. Free memory was 146.7MB in the beginning and 144.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.19ms. Allocated memory is still 176.2MB. Free memory was 144.9MB in the beginning and 143.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 566.74ms. Allocated memory is still 176.2MB. Free memory was 142.8MB in the beginning and 128.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4366.35ms. Allocated memory was 176.2MB in the beginning and 220.2MB in the end (delta: 44.0MB). Free memory was 127.5MB in the beginning and 75.7MB in the end (delta: 51.8MB). Peak memory consumption was 98.2MB. Max. memory is 16.1GB. * Witness Printer took 169.20ms. Allocated memory is still 220.2MB. Free memory was 75.7MB in the beginning and 70.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1779 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1739 mSDsluCounter, 957 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 648 mSDsCounter, 301 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 301 mSolverCounterUnsat, 309 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 699 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 35 PreInvPairs, 58 NumberOfFragments, 76 HoareAnnotationTreeSize, 35 FomulaSimplifications, 480 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 61 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 258/294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((size == 0) && (i == 0)) && (0 == \result)) && (n == 0)) && (x == 0)) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((size == 0) && (i == 0)) && (n == 0)) && (x == 0)) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (n == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-11-06 22:16:30,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f2d86d4-3396-4b9f-8fb9-59bb9d4ddfbc/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE