./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 281fe865ae002c37b4eaf841ade310d12dfc0d84dbffda3840d13e21dda564dc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:14,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:15,060 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:34:15,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:15,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:15,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:15,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:15,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:15,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:15,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:15,098 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:15,099 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:15,100 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:15,100 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:34:15,101 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:15,102 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:15,102 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:34:15,103 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:34:15,103 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:15,104 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:34:15,105 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:34:15,106 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:34:15,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:15,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:15,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:34:15,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:15,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:34:15,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:15,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:15,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:15,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:15,112 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:34:15,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:15,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:15,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:15,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:15,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:15,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:15,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:15,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:15,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:15,116 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:34:15,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:34:15,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:15,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:15,117 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:15,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:15,118 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_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 281fe865ae002c37b4eaf841ade310d12dfc0d84dbffda3840d13e21dda564dc [2023-11-23 20:34:15,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:15,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:15,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:15,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:15,488 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:15,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i [2023-11-23 20:34:18,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:18,965 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:18,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i [2023-11-23 20:34:18,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/data/3396debb4/d026e999cf2b46ca9d9c0cf8b4b75b43/FLAG34955b9f5 [2023-11-23 20:34:18,990 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/data/3396debb4/d026e999cf2b46ca9d9c0cf8b4b75b43 [2023-11-23 20:34:18,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:18,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:18,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:18,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:19,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:19,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:18" (1/1) ... [2023-11-23 20:34:19,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426edfe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19, skipping insertion in model container [2023-11-23 20:34:19,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:18" (1/1) ... [2023-11-23 20:34:19,048 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:19,204 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_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i[916,929] [2023-11-23 20:34:19,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:19,272 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:19,283 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_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-33.i[916,929] [2023-11-23 20:34:19,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:19,348 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:19,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19 WrapperNode [2023-11-23 20:34:19,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:19,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:19,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:19,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:19,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,442 INFO L138 Inliner]: procedures = 29, calls = 140, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 436 [2023-11-23 20:34:19,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:19,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:19,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:19,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:19,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:19,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:19,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:19,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:19,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (1/1) ... [2023-11-23 20:34:19,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:19,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:19,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:19,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 20:34:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:34:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-23 20:34:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:34:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-23 20:34:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:34:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:34:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:34:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:19,766 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:19,769 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:20,292 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:20,992 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:20,993 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:34:20,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:20 BoogieIcfgContainer [2023-11-23 20:34:20,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:21,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:21,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:21,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:21,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:18" (1/3) ... [2023-11-23 20:34:21,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ca86bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:21, skipping insertion in model container [2023-11-23 20:34:21,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:19" (2/3) ... [2023-11-23 20:34:21,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ca86bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:21, skipping insertion in model container [2023-11-23 20:34:21,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:20" (3/3) ... [2023-11-23 20:34:21,016 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-33.i [2023-11-23 20:34:21,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:21,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:21,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:21,115 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e8d00cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:21,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 20:34:21,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 20:34:21,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:21,133 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:21,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:21,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash -576504707, now seen corresponding path program 1 times [2023-11-23 20:34:21,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:21,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374281550] [2023-11-23 20:34:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:21,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 20:34:42,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:34:42,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374281550] [2023-11-23 20:34:42,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374281550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:34:42,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471658859] [2023-11-23 20:34:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:42,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:34:42,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:42,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:34:42,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d74eb72-efad-4a2e-94b9-139a13cd5c1a/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:34:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:43,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-23 20:34:43,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:43,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:43,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:43,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-11-23 20:34:44,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-23 20:34:44,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-23 20:34:44,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-23 20:34:44,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:44,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-11-23 20:34:45,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:45,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:45,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2023-11-23 20:34:49,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 138 treesize of output 138 [2023-11-23 20:34:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 20:34:50,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:34:54,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:34:54,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 149