./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1599706a72281425c0fc51552af364ca390697b315c5af0e88e5d6de4e668c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:03:24,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:03:24,471 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 21:03:24,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:03:24,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:03:24,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:03:24,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:03:24,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:03:24,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:03:24,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:03:24,514 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:03:24,515 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:03:24,516 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:03:24,518 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:03:24,519 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:03:24,519 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:03:24,520 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:03:24,520 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:03:24,521 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:03:24,523 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:03:24,523 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:03:24,524 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:03:24,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:03:24,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:03:24,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:03:24,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:03:24,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:03:24,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:03:24,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:03:24,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:03:24,530 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:03:24,531 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:03:24,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:03:24,531 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:03:24,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:03:24,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:03:24,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:03:24,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:03:24,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:03:24,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:03:24,534 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:03:24,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:03:24,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:03:24,535 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:03:24,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:03:24,536 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1599706a72281425c0fc51552af364ca390697b315c5af0e88e5d6de4e668c6 [2023-11-06 21:03:24,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:03:24,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:03:24,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:03:24,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:03:24,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:03:24,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-11-06 21:03:27,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:03:28,247 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:03:28,247 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-11-06 21:03:28,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/data/edace442b/e116832857aa4cbda388ba17715f6369/FLAG52fcdb33b [2023-11-06 21:03:28,271 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/data/edace442b/e116832857aa4cbda388ba17715f6369 [2023-11-06 21:03:28,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:03:28,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:03:28,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:03:28,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:03:28,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:03:28,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67426292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28, skipping insertion in model container [2023-11-06 21:03:28,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,316 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:03:28,510 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_4f2551c7-ab12-49a3-93da-078cbd4568cb/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[882,895] [2023-11-06 21:03:28,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:03:28,580 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:03:28,593 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_4f2551c7-ab12-49a3-93da-078cbd4568cb/sv-benchmarks/c/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[882,895] [2023-11-06 21:03:28,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:03:28,620 WARN L672 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:03:28,628 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:03:28,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28 WrapperNode [2023-11-06 21:03:28,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:03:28,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:03:28,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:03:28,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:03:28,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,674 INFO L138 Inliner]: procedures = 42, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2023-11-06 21:03:28,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:03:28,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:03:28,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:03:28,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:03:28,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,698 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:03:28,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:03:28,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:03:28,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:03:28,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (1/1) ... [2023-11-06 21:03:28,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:03:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:03:28,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:03:28,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:03:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:03:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:03:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:03:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:03:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-06 21:03:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:03:28,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:03:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:03:28,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:03:28,908 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:03:28,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:03:29,261 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:03:29,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:03:29,419 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:03:29,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:03:29 BoogieIcfgContainer [2023-11-06 21:03:29,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:03:29,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:03:29,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:03:29,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:03:29,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:03:28" (1/3) ... [2023-11-06 21:03:29,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d096366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:03:29, skipping insertion in model container [2023-11-06 21:03:29,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:28" (2/3) ... [2023-11-06 21:03:29,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d096366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:03:29, skipping insertion in model container [2023-11-06 21:03:29,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:03:29" (3/3) ... [2023-11-06 21:03:29,443 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2023-11-06 21:03:29,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:03:29,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:03:29,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:03:29,526 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=FINITE_AUTOMATA, 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;@1f76a991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:03:29,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:03:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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 21:03:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:03:29,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:03:29,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:03:29,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:03:29,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:03:29,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1646932840, now seen corresponding path program 1 times [2023-11-06 21:03:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:03:29,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153963739] [2023-11-06 21:03:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:03:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:03:29,866 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 21:03:29,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:03:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153963739] [2023-11-06 21:03:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153963739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:03:29,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:03:29,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:03:29,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500285265] [2023-11-06 21:03:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:03:29,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:03:29,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:03:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:03:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:03:29,911 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 21:03:29,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:03:29,965 INFO L93 Difference]: Finished difference Result 41 states and 61 transitions. [2023-11-06 21:03:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:03:29,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 21:03:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:03:29,977 INFO L225 Difference]: With dead ends: 41 [2023-11-06 21:03:29,977 INFO L226 Difference]: Without dead ends: 19 [2023-11-06 21:03:29,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:03:29,984 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:03:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:03:30,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-06 21:03:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-06 21:03:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 21:03:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-11-06 21:03:30,016 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2023-11-06 21:03:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:03:30,016 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-11-06 21:03:30,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 21:03:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-11-06 21:03:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 21:03:30,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:03:30,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:03:30,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:03:30,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:03:30,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:03:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 572272013, now seen corresponding path program 1 times [2023-11-06 21:03:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:03:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571696808] [2023-11-06 21:03:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:03:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:03:30,209 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 21:03:30,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:03:30,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571696808] [2023-11-06 21:03:30,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571696808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:03:30,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253085566] [2023-11-06 21:03:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:30,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:30,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:03:30,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:03:30,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:03:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:03:30,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:03:30,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:03:30,383 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 21:03:30,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:03:30,405 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 21:03:30,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253085566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:03:30,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1669785185] [2023-11-06 21:03:30,431 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-06 21:03:30,431 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 21:03:30,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 21:03:30,442 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 21:03:30,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 21:03:31,266 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 21:03:31,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1669785185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:03:31,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:03:31,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2023-11-06 21:03:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638951060] [2023-11-06 21:03:31,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:03:31,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:03:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:03:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:03:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:03:31,918 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 21:03:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:03:32,133 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2023-11-06 21:03:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:03:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 21:03:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:03:32,135 INFO L225 Difference]: With dead ends: 44 [2023-11-06 21:03:32,135 INFO L226 Difference]: Without dead ends: 22 [2023-11-06 21:03:32,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:03:32,138 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:03:32,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:03:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-06 21:03:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-11-06 21:03:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 21:03:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-11-06 21:03:32,146 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 15 [2023-11-06 21:03:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:03:32,146 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-11-06 21:03:32,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 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 21:03:32,147 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-06 21:03:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 21:03:32,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:03:32,148 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:03:32,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:03:32,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:32,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:03:32,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:03:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1034927522, now seen corresponding path program 1 times [2023-11-06 21:03:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:03:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855849380] [2023-11-06 21:03:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:32,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:03:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:03:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:03:32,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:03:32,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855849380] [2023-11-06 21:03:32,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855849380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:03:32,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943996469] [2023-11-06 21:03:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:32,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:32,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:03:32,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:03:32,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:03:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:03:32,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:03:32,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:03:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:03:32,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:03:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:03:32,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943996469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:03:32,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [800084622] [2023-11-06 21:03:32,669 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-06 21:03:32,669 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 21:03:32,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 21:03:32,671 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 21:03:32,672 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 21:03:33,785 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 21:03:35,381 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '409#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1) |ULTIMATE.start_parse_expression_list_~j~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 1) (<= 2 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|)) (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 0) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= 2 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|))))' at error location [2023-11-06 21:03:35,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 21:03:35,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:03:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 21:03:35,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294329928] [2023-11-06 21:03:35,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:03:35,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:03:35,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:03:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:03:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:03:35,384 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 21:03:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:03:35,426 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-11-06 21:03:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:03:35,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-06 21:03:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:03:35,427 INFO L225 Difference]: With dead ends: 42 [2023-11-06 21:03:35,427 INFO L226 Difference]: Without dead ends: 24 [2023-11-06 21:03:35,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:03:35,432 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:03:35,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:03:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-06 21:03:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-06 21:03:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:03:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-06 21:03:35,442 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2023-11-06 21:03:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:03:35,442 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-06 21:03:35,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 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 21:03:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-06 21:03:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 21:03:35,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:03:35,443 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:03:35,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:03:35,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:35,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:03:35,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:03:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2051439790, now seen corresponding path program 2 times [2023-11-06 21:03:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:03:35,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134160157] [2023-11-06 21:03:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:03:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:03:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:03:35,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:03:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134160157] [2023-11-06 21:03:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134160157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:03:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176857522] [2023-11-06 21:03:35,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:03:35,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:03:35,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:03:35,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:03:35,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 21:03:35,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:03:35,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 21:03:35,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:03:36,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-06 21:03:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:03:36,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:03:36,560 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 21:03:36,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 51 [2023-11-06 21:03:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:03:36,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176857522] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:03:36,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1133825096] [2023-11-06 21:03:36,679 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-06 21:03:36,679 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 21:03:36,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 21:03:36,680 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 21:03:36,680 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 21:03:37,518 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 21:03:39,329 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '663#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1) |ULTIMATE.start_parse_expression_list_~j~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 1) (<= 2 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|)) (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 0) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= 2 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|))))' at error location [2023-11-06 21:03:39,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 21:03:39,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:03:39,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2023-11-06 21:03:39,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847515087] [2023-11-06 21:03:39,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:03:39,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 21:03:39,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:03:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 21:03:39,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 21:03:39,332 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 21:03:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:03:40,213 INFO L93 Difference]: Finished difference Result 122 states and 153 transitions. [2023-11-06 21:03:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 21:03:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-06 21:03:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:03:40,216 INFO L225 Difference]: With dead ends: 122 [2023-11-06 21:03:40,216 INFO L226 Difference]: Without dead ends: 104 [2023-11-06 21:03:40,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=380, Invalid=2170, Unknown=0, NotChecked=0, Total=2550 [2023-11-06 21:03:40,219 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 124 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:03:40,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 120 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:03:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-06 21:03:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 41. [2023-11-06 21:03:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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 21:03:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-11-06 21:03:40,231 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 22 [2023-11-06 21:03:40,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:03:40,232 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-11-06 21:03:40,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 21:03:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-11-06 21:03:40,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 21:03:40,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:03:40,234 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:03:40,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 21:03:40,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:40,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:03:40,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:03:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1727315025, now seen corresponding path program 3 times [2023-11-06 21:03:40,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:03:40,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127919535] [2023-11-06 21:03:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:40,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:03:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:03:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:03:40,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:03:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127919535] [2023-11-06 21:03:40,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127919535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:03:40,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879988346] [2023-11-06 21:03:40,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:03:40,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:40,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:03:40,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:03:40,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:03:40,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:03:40,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:03:40,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:03:40,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:03:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:03:40,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:03:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:03:40,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879988346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:03:40,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1189319149] [2023-11-06 21:03:40,842 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-06 21:03:40,842 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 21:03:40,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 21:03:40,843 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 21:03:40,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 21:03:41,556 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-06 21:03:43,047 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1107#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= (+ |ULTIMATE.start_parse_expression_list_~start~0#1| 1) |ULTIMATE.start_parse_expression_list_~j~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 1) (<= 2 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|)) (and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_parse_expression_list_~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~start~0#1| 0) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= 2 |ULTIMATE.start_parse_expression_list_~#str2~0#1.base|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_#in~str#1.base|) (= |ULTIMATE.start_parse_expression_list_#in~str#1.offset| 0) (= |ULTIMATE.start_parse_expression_list_~#str2~0#1.offset| 0) (<= 2 |ULTIMATE.start_parse_expression_list_~str#1.base|) (<= 0 |ULTIMATE.start_parse_expression_list_~i~0#1|))))' at error location [2023-11-06 21:03:43,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-06 21:03:43,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:03:43,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-06 21:03:43,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413408485] [2023-11-06 21:03:43,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:03:43,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:03:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:03:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:03:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-11-06 21:03:43,050 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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 21:03:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:03:43,099 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2023-11-06 21:03:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:03:43,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-06 21:03:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:03:43,104 INFO L225 Difference]: With dead ends: 77 [2023-11-06 21:03:43,104 INFO L226 Difference]: Without dead ends: 43 [2023-11-06 21:03:43,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2023-11-06 21:03:43,109 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:03:43,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:03:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-06 21:03:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-06 21:03:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 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 21:03:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2023-11-06 21:03:43,132 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 27 [2023-11-06 21:03:43,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:03:43,133 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2023-11-06 21:03:43,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 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 21:03:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2023-11-06 21:03:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 21:03:43,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:03:43,135 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:03:43,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:03:43,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:03:43,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:03:43,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:03:43,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1516286511, now seen corresponding path program 4 times [2023-11-06 21:03:43,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:03:43,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846475912] [2023-11-06 21:03:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:03:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:03:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:03:43,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:03:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:03:43,481 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 21:03:43,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:03:43,483 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:03:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:03:43,490 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-06 21:03:43,494 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:03:43,539 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 21:03:43,542 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,544 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,545 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,545 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,546 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,546 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:03:43 BoogieIcfgContainer [2023-11-06 21:03:43,559 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:03:43,559 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:03:43,560 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:03:43,560 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:03:43,560 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:03:29" (3/4) ... [2023-11-06 21:03:43,561 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 21:03:43,570 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-06 21:03:43,571 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,572 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,572 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,573 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,573 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,573 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 21:03:43,608 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 21:03:43,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:03:43,608 INFO L158 Benchmark]: Toolchain (without parser) took 15332.68ms. Allocated memory was 144.7MB in the beginning and 335.5MB in the end (delta: 190.8MB). Free memory was 114.0MB in the beginning and 292.3MB in the end (delta: -178.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-11-06 21:03:43,609 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:03:43,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.13ms. Allocated memory is still 144.7MB. Free memory was 114.0MB in the beginning and 101.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:03:43,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.88ms. Allocated memory is still 144.7MB. Free memory was 101.8MB in the beginning and 99.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:03:43,610 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 144.7MB. Free memory was 99.9MB in the beginning and 98.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:03:43,610 INFO L158 Benchmark]: RCFGBuilder took 714.92ms. Allocated memory is still 144.7MB. Free memory was 98.2MB in the beginning and 77.0MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:03:43,611 INFO L158 Benchmark]: TraceAbstraction took 14127.28ms. Allocated memory was 144.7MB in the beginning and 335.5MB in the end (delta: 190.8MB). Free memory was 76.4MB in the beginning and 295.5MB in the end (delta: -219.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:03:43,611 INFO L158 Benchmark]: Witness Printer took 48.37ms. Allocated memory is still 335.5MB. Free memory was 295.5MB in the beginning and 292.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:03:43,613 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 100.7MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.13ms. Allocated memory is still 144.7MB. Free memory was 114.0MB in the beginning and 101.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.88ms. Allocated memory is still 144.7MB. Free memory was 101.8MB in the beginning and 99.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 144.7MB. Free memory was 99.9MB in the beginning and 98.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 714.92ms. Allocated memory is still 144.7MB. Free memory was 98.2MB in the beginning and 77.0MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14127.28ms. Allocated memory was 144.7MB in the beginning and 335.5MB in the end (delta: 190.8MB). Free memory was 76.4MB in the beginning and 295.5MB in the end (delta: -219.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.37ms. Allocated memory is still 335.5MB. Free memory was 295.5MB in the beginning and 292.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch5 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] char A [2 + 2 + 4 +1]; [L87] int i = 0; VAL [A={10:0}, i=0] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=1] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=2] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=3] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=4] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=5] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=6] [L87] COND TRUE i<2 + 2 + 4 -1 [L88] A[i] = __VERIFIER_nondet_char() [L87] i++ VAL [A={10:0}, i=7] [L87] COND FALSE !(i<2 + 2 + 4 -1) [L90] A[2 + 2 + 4] = 0 [L91] CALL parse_expression_list (A) [L60] int start=0, i=-1, j=-1; [L61] char str2[2]; VAL [i=-1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L62] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}] [L64] i++ [L65] str[i] [L66] case 0: VAL [i=0, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-8] [L81] EXPR str[i] VAL [i=0, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-8] [L81] COND TRUE str[i] != 0 [L64] i++ [L65] str[i] [L66] case 0: VAL [i=1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-2] [L81] EXPR str[i] VAL [i=1, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=-2] [L81] COND TRUE str[i] != 0 [L64] i++ [L65] str[i] [L66] case 0: VAL [i=2, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0] [L67] EXPR str[start] [L67] (str[start] == ' ') || (str[start] == '\t') [L67] EXPR str[start] [L67] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0, str[start]=-8, str[start]=-8] [L67] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L68] EXPR str[start] [L68] COND FALSE !(str[start] == '"') [L69] j = i-1 VAL [i=2, j=1, start++=49, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0] [L70] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L70] EXPR str[j] [L70] EXPR (str[j] == ' ') || (str[j] == '\t') [L70] EXPR str[j] [L70] EXPR (str[j] == ' ') || (str[j] == '\t') [L70] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start++=49, start=0, str2={7:0}, str={10:0}, str={10:0}, str[i]=0, str[j]=-2, str[j]=-2] [L70] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L71] (0 < j) && (str[j] == '"') [L71] EXPR str[j] [L71] (0 < j) && (str[j] == '"') [L71] COND FALSE !((0 < j) && (str[j] == '"')) [L72] COND TRUE start<=j [L73] CALL r_strncpy(str2, str+start, j-start+1) [L42] return strncpy(dest,src,n); [L73] RET r_strncpy(str2, str+start, j-start+1) [L74] CALL __VERIFIER_assert(j - start + 1 < 2) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.0s, OverallIterations: 6, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 234 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 428 IncrementalHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 60 mSDtfsCounter, 428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=5, InterpolantAutomatonStates: 55, 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, 5 MinimizatonAttempts, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 207 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 SizeOfPredicates, 14 NumberOfNonLiveVariables, 481 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 52/117 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: OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 13, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 35, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 13, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 142, DAG_COMPRESSION_RETAINED_NODES: 36, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-06 21:03:43,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2551c7-ab12-49a3-93da-078cbd4568cb/bin/utaipan-verify-FOvIYxoinp/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE