./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:25,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:25,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:21:25,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:25,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:25,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:25,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:25,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:25,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:21:25,940 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:21:25,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:25,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:25,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:25,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:25,943 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:25,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:25,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:21:25,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:21:25,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:25,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:21:25,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:25,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:21:25,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:25,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:21:25,954 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:21:25,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:21:25,955 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:25,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:25,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:25,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:21:25,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:25,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:25,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:25,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:25,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:21:25,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:25,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:25,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:25,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:25,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:21:25,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:25,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:25,967 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_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d [2023-11-21 22:21:26,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:26,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:26,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:26,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:26,307 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:26,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2023-11-21 22:21:29,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:29,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:29,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2023-11-21 22:21:29,668 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/data/cba923efa/3eb2c521c5604e14b7499aca71611e77/FLAG2795fe81c [2023-11-21 22:21:29,689 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/data/cba923efa/3eb2c521c5604e14b7499aca71611e77 [2023-11-21 22:21:29,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:29,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:29,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:29,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:29,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:29,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:29,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538e6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29, skipping insertion in model container [2023-11-21 22:21:29,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:29,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:29,907 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_f768f6f0-994e-431a-83c3-bbcd19823952/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2023-11-21 22:21:29,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:29,933 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:29,969 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_f768f6f0-994e-431a-83c3-bbcd19823952/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2023-11-21 22:21:29,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:29,990 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:29,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29 WrapperNode [2023-11-21 22:21:29,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:29,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:29,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:29,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:30,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,057 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-11-21 22:21:30,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:30,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:30,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:30,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:30,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,072 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,079 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:21:30,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:30,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:30,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:30,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:30,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (1/1) ... [2023-11-21 22:21:30,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:30,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:30,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:30,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:21:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:21:30,227 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:30,229 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:30,345 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:30,385 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:30,385 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:21:30,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:30 BoogieIcfgContainer [2023-11-21 22:21:30,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:30,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:30,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:30,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:30,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:29" (1/3) ... [2023-11-21 22:21:30,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff7e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:30, skipping insertion in model container [2023-11-21 22:21:30,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:29" (2/3) ... [2023-11-21 22:21:30,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff7e8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:30, skipping insertion in model container [2023-11-21 22:21:30,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:30" (3/3) ... [2023-11-21 22:21:30,397 INFO L112 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2023-11-21 22:21:30,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:30,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:21:30,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:30,478 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@89c31ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:30,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:21:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-21 22:21:30,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:21:30,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:30,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:30,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:30,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 894909737, now seen corresponding path program 1 times [2023-11-21 22:21:30,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238552787] [2023-11-21 22:21:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:30,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238552787] [2023-11-21 22:21:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238552787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:30,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499067900] [2023-11-21 22:21:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:30,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:31,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:31,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:31,012 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-21 22:21:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:31,145 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2023-11-21 22:21:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:31,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2023-11-21 22:21:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:31,156 INFO L225 Difference]: With dead ends: 31 [2023-11-21 22:21:31,156 INFO L226 Difference]: Without dead ends: 16 [2023-11-21 22:21:31,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:31,163 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:31,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:21:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-21 22:21:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-21 22:21:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:21:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-21 22:21:31,201 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2023-11-21 22:21:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:31,201 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-21 22:21:31,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-11-21 22:21:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-21 22:21:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:21:31,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:31,203 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:31,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:31,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash -101039115, now seen corresponding path program 1 times [2023-11-21 22:21:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:31,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905709991] [2023-11-21 22:21:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:21:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:31,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905709991] [2023-11-21 22:21:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905709991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:31,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:31,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:31,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408470058] [2023-11-21 22:21:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:31,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:31,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:31,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:31,346 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:21:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:31,394 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2023-11-21 22:21:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-21 22:21:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:31,396 INFO L225 Difference]: With dead ends: 26 [2023-11-21 22:21:31,397 INFO L226 Difference]: Without dead ends: 24 [2023-11-21 22:21:31,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:31,399 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:31,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-21 22:21:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-11-21 22:21:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:21:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-21 22:21:31,413 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 12 [2023-11-21 22:21:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:31,414 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-21 22:21:31,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:21:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-21 22:21:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 22:21:31,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:31,416 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:31,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:31,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:31,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash 114117397, now seen corresponding path program 1 times [2023-11-21 22:21:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697175356] [2023-11-21 22:21:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:21:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:21:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 22:21:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:21:31,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697175356] [2023-11-21 22:21:31,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697175356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214140429] [2023-11-21 22:21:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:31,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:31,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:21:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:21:31,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:21:32,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:21:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214140429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:32,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:21:32,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-21 22:21:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772926956] [2023-11-21 22:21:32,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:32,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:21:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:21:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:21:32,127 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-21 22:21:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:32,184 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2023-11-21 22:21:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:21:32,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2023-11-21 22:21:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:32,186 INFO L225 Difference]: With dead ends: 34 [2023-11-21 22:21:32,186 INFO L226 Difference]: Without dead ends: 32 [2023-11-21 22:21:32,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:21:32,188 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:32,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-21 22:21:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-11-21 22:21:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:21:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-11-21 22:21:32,199 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 24 [2023-11-21 22:21:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:32,199 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-21 22:21:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-21 22:21:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-11-21 22:21:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 22:21:32,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:32,202 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-11-21 22:21:32,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:32,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash -726752715, now seen corresponding path program 2 times [2023-11-21 22:21:32,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:32,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574656713] [2023-11-21 22:21:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:21:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:21:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 22:21:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-21 22:21:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:21:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 22:21:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574656713] [2023-11-21 22:21:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574656713] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:32,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402032761] [2023-11-21 22:21:32,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:21:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:32,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:32,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:21:32,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:21:32,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:21:32,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:21:32,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 22:21:32,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 22:21:32,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402032761] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:32,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:21:32,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-11-21 22:21:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076936984] [2023-11-21 22:21:32,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:32,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:21:32,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:21:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:21:32,905 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:21:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:32,961 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-11-21 22:21:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:21:32,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-11-21 22:21:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:32,963 INFO L225 Difference]: With dead ends: 31 [2023-11-21 22:21:32,963 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 22:21:32,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:21:32,968 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:32,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:21:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 22:21:32,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 22:21:32,974 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) [2023-11-21 22:21:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:21:32,974 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2023-11-21 22:21:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:32,974 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:21:32,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:21:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:21:32,975 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 22:21:32,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:21:33,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:33,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:33,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 22:21:33,291 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-11-21 22:21:33,292 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 22:21:33,292 INFO L899 garLoopResultBuilder]: For program point L44(lines 25 45) no Hoare annotation was computed. [2023-11-21 22:21:33,292 INFO L899 garLoopResultBuilder]: For program point L42(lines 38 43) no Hoare annotation was computed. [2023-11-21 22:21:33,292 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 22:21:33,292 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 43) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~glob2_p_off~0#1|) (<= |ULTIMATE.start_main_~glob2_pathlim_off~0#1| |ULTIMATE.start_main_~MAXPATHLEN~0#1|)) [2023-11-21 22:21:33,293 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~glob2_p_off~0#1|) (<= |ULTIMATE.start_main_~glob2_pathlim_off~0#1| |ULTIMATE.start_main_~MAXPATHLEN~0#1|) (<= |ULTIMATE.start_main_~glob2_p_off~0#1| |ULTIMATE.start_main_~MAXPATHLEN~0#1|)) [2023-11-21 22:21:33,293 INFO L895 garLoopResultBuilder]: At program point L41-1(line 41) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~glob2_p_off~0#1|) (<= |ULTIMATE.start_main_~glob2_pathlim_off~0#1| |ULTIMATE.start_main_~MAXPATHLEN~0#1|) (<= |ULTIMATE.start_main_~glob2_p_off~0#1| |ULTIMATE.start_main_~MAXPATHLEN~0#1|)) [2023-11-21 22:21:33,293 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-11-21 22:21:33,293 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-11-21 22:21:33,293 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-11-21 22:21:33,294 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-21 22:21:33,294 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-21 22:21:33,294 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-11-21 22:21:33,298 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-21 22:21:33,300 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:21:33,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:21:33 BoogieIcfgContainer [2023-11-21 22:21:33,313 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:21:33,314 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:21:33,314 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:21:33,315 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:21:33,316 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:30" (3/4) ... [2023-11-21 22:21:33,320 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:21:33,325 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-21 22:21:33,332 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-21 22:21:33,332 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-21 22:21:33,332 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 22:21:33,332 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:21:33,433 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:21:33,433 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:21:33,433 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:21:33,440 INFO L158 Benchmark]: Toolchain (without parser) took 3745.97ms. Allocated memory is still 140.5MB. Free memory was 104.6MB in the beginning and 43.0MB in the end (delta: 61.5MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2023-11-21 22:21:33,440 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:33,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.63ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 112.3MB in the end (delta: -7.8MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2023-11-21 22:21:33,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.93ms. Allocated memory is still 140.5MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:33,441 INFO L158 Benchmark]: Boogie Preprocessor took 31.71ms. Allocated memory is still 140.5MB. Free memory was 110.8MB in the beginning and 109.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:33,442 INFO L158 Benchmark]: RCFGBuilder took 296.86ms. Allocated memory is still 140.5MB. Free memory was 109.2MB in the beginning and 98.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:21:33,442 INFO L158 Benchmark]: TraceAbstraction took 2923.48ms. Allocated memory is still 140.5MB. Free memory was 98.2MB in the beginning and 47.2MB in the end (delta: 51.0MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2023-11-21 22:21:33,442 INFO L158 Benchmark]: Witness Printer took 125.42ms. Allocated memory is still 140.5MB. Free memory was 47.2MB in the beginning and 43.0MB in the end (delta: 4.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:21:33,444 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.63ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 112.3MB in the end (delta: -7.8MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.93ms. Allocated memory is still 140.5MB. Free memory was 112.3MB in the beginning and 110.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.71ms. Allocated memory is still 140.5MB. Free memory was 110.8MB in the beginning and 109.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 296.86ms. Allocated memory is still 140.5MB. Free memory was 109.2MB in the beginning and 98.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2923.48ms. Allocated memory is still 140.5MB. Free memory was 98.2MB in the beginning and 47.2MB in the end (delta: 51.0MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Witness Printer took 125.42ms. Allocated memory is still 140.5MB. Free memory was 47.2MB in the beginning and 43.0MB in the end (delta: 4.2MB). Peak memory consumption was 6.3MB. 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: 19]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 32 mSDtfsCounter, 136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 129 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 11 PreInvPairs, 20 NumberOfFragments, 28 HoareAnnotationTreeSize, 11 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 110 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 399 SizeOfPredicates, 8 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 224/245 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: 38]: Loop Invariant Derived loop invariant: ((0 <= glob2_p_off) && (glob2_pathlim_off <= MAXPATHLEN)) RESULT: Ultimate proved your program to be correct! [2023-11-21 22:21:33,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f768f6f0-994e-431a-83c3-bbcd19823952/bin/uautomizer-verify-bycVGegfSx/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