./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2 --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 a5f87b8357f03d9a8be5e507a55ad1b488f3fb22c6f294c5cc7e1ddb521502de --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:36:13,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:36:13,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:36:13,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:36:13,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:36:13,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:36:13,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:36:13,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:36:13,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:36:13,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:36:13,379 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:36:13,379 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:36:13,380 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:36:13,382 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:36:13,382 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:36:13,383 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:36:13,383 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:36:13,383 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:36:13,384 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:36:13,384 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:36:13,384 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:36:13,385 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:36:13,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:36:13,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:36:13,386 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:36:13,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:36:13,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:36:13,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:36:13,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:36:13,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:36:13,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:36:13,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:36:13,399 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:36:13,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:36:13,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:36:13,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:36:13,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:36:13,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:36:13,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:36:13,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:36:13,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:36:13,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:36:13,402 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:36:13,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:36:13,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:36:13,403 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:36:13,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:36:13,403 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_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5f87b8357f03d9a8be5e507a55ad1b488f3fb22c6f294c5cc7e1ddb521502de [2024-11-02 12:36:13,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:36:13,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:36:13,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:36:13,756 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:36:13,757 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:36:13,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/eca-rers2012/Problem01_label58.c Unable to find full path for "g++" [2024-11-02 12:36:15,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:36:16,126 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:36:16,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/sv-benchmarks/c/eca-rers2012/Problem01_label58.c [2024-11-02 12:36:16,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/data/376aa1965/15c9dcb5bb014e07af044c252baf0220/FLAGb8e33a614 [2024-11-02 12:36:16,398 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/data/376aa1965/15c9dcb5bb014e07af044c252baf0220 [2024-11-02 12:36:16,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:36:16,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:36:16,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:36:16,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:36:16,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:36:16,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:36:16" (1/1) ... [2024-11-02 12:36:16,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3164d282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:16, skipping insertion in model container [2024-11-02 12:36:16,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:36:16" (1/1) ... [2024-11-02 12:36:16,479 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:36:16,832 WARN L251 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_950eca20-c560-4604-8f03-1d83c1384277/sv-benchmarks/c/eca-rers2012/Problem01_label58.c[17861,17874] [2024-11-02 12:36:16,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:36:16,893 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:36:17,009 WARN L251 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_950eca20-c560-4604-8f03-1d83c1384277/sv-benchmarks/c/eca-rers2012/Problem01_label58.c[17861,17874] [2024-11-02 12:36:17,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:36:17,049 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:36:17,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17 WrapperNode [2024-11-02 12:36:17,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:36:17,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:36:17,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:36:17,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:36:17,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,172 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-11-02 12:36:17,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:36:17,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:36:17,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:36:17,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:36:17,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:36:17,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:36:17,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:36:17,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:36:17,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (1/1) ... [2024-11-02 12:36:17,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:36:17,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:36:17,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:36:17,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:36:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:36:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:36:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:36:17,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:36:17,429 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:36:17,431 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:36:18,654 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-02 12:36:18,654 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:36:18,992 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:36:18,992 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:36:18,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:18 BoogieIcfgContainer [2024-11-02 12:36:18,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:36:18,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:36:18,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:36:19,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:36:19,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:36:16" (1/3) ... [2024-11-02 12:36:19,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113d00b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:36:19, skipping insertion in model container [2024-11-02 12:36:19,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:17" (2/3) ... [2024-11-02 12:36:19,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113d00b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:36:19, skipping insertion in model container [2024-11-02 12:36:19,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:18" (3/3) ... [2024-11-02 12:36:19,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2024-11-02 12:36:19,026 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:36:19,027 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:36:19,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:36:19,106 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@7910e408, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:36:19,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:36:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2024-11-02 12:36:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-02 12:36:19,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:19,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:19,123 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:19,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1230145297, now seen corresponding path program 1 times [2024-11-02 12:36:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509237858] [2024-11-02 12:36:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:19,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:19,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:19,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509237858] [2024-11-02 12:36:19,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509237858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:19,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:19,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:36:19,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485944151] [2024-11-02 12:36:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:19,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:19,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:19,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:19,707 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2024-11-02 12:36:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:20,269 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2024-11-02 12:36:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2024-11-02 12:36:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:20,283 INFO L225 Difference]: With dead ends: 224 [2024-11-02 12:36:20,283 INFO L226 Difference]: Without dead ends: 145 [2024-11-02 12:36:20,286 INFO L431 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 [2024-11-02 12:36:20,290 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:20,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:36:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-02 12:36:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-02 12:36:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 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) [2024-11-02 12:36:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2024-11-02 12:36:20,336 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2024-11-02 12:36:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:20,337 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2024-11-02 12:36:20,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2024-11-02 12:36:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2024-11-02 12:36:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-02 12:36:20,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:20,340 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:20,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:36:20,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:20,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:20,342 INFO L85 PathProgramCache]: Analyzing trace with hash -201558711, now seen corresponding path program 1 times [2024-11-02 12:36:20,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:20,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464016169] [2024-11-02 12:36:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:20,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:20,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464016169] [2024-11-02 12:36:20,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464016169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:20,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:20,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:36:20,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656995101] [2024-11-02 12:36:20,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:20,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:20,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:20,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:20,613 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-02 12:36:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:21,135 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2024-11-02 12:36:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2024-11-02 12:36:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:21,138 INFO L225 Difference]: With dead ends: 431 [2024-11-02 12:36:21,139 INFO L226 Difference]: Without dead ends: 287 [2024-11-02 12:36:21,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:21,141 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:21,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 15 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:36:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-02 12:36:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2024-11-02 12:36:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.786046511627907) internal successors, (384), 215 states have internal predecessors, (384), 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) [2024-11-02 12:36:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 384 transitions. [2024-11-02 12:36:21,172 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 384 transitions. Word has length 75 [2024-11-02 12:36:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:21,173 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 384 transitions. [2024-11-02 12:36:21,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-02 12:36:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 384 transitions. [2024-11-02 12:36:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-02 12:36:21,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:21,179 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:21,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:36:21,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:21,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2025670359, now seen corresponding path program 1 times [2024-11-02 12:36:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:21,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521587518] [2024-11-02 12:36:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:21,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:21,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:21,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521587518] [2024-11-02 12:36:21,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521587518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:21,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:21,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:36:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896803557] [2024-11-02 12:36:21,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:21,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:21,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:21,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:21,331 INFO L87 Difference]: Start difference. First operand 216 states and 384 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2024-11-02 12:36:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:21,751 INFO L93 Difference]: Finished difference Result 573 states and 1011 transitions. [2024-11-02 12:36:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:21,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 76 [2024-11-02 12:36:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:21,754 INFO L225 Difference]: With dead ends: 573 [2024-11-02 12:36:21,754 INFO L226 Difference]: Without dead ends: 358 [2024-11-02 12:36:21,755 INFO L431 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 [2024-11-02 12:36:21,756 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:21,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:36:21,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-02 12:36:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-11-02 12:36:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.607843137254902) internal successors, (574), 357 states have internal predecessors, (574), 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) [2024-11-02 12:36:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 574 transitions. [2024-11-02 12:36:21,793 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 574 transitions. Word has length 76 [2024-11-02 12:36:21,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:21,794 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 574 transitions. [2024-11-02 12:36:21,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2024-11-02 12:36:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 574 transitions. [2024-11-02 12:36:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-02 12:36:21,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:21,801 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:21,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:36:21,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:21,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:21,802 INFO L85 PathProgramCache]: Analyzing trace with hash 368601472, now seen corresponding path program 1 times [2024-11-02 12:36:21,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:21,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028212359] [2024-11-02 12:36:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:36:22,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028212359] [2024-11-02 12:36:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028212359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:22,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:36:22,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280948698] [2024-11-02 12:36:22,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:22,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:22,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:22,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:22,214 INFO L87 Difference]: Start difference. First operand 358 states and 574 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-11-02 12:36:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:22,568 INFO L93 Difference]: Finished difference Result 715 states and 1147 transitions. [2024-11-02 12:36:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 87 [2024-11-02 12:36:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:22,573 INFO L225 Difference]: With dead ends: 715 [2024-11-02 12:36:22,574 INFO L226 Difference]: Without dead ends: 358 [2024-11-02 12:36:22,575 INFO L431 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 [2024-11-02 12:36:22,579 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:22,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:36:22,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-02 12:36:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-11-02 12:36:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.5910364145658262) internal successors, (568), 357 states have internal predecessors, (568), 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) [2024-11-02 12:36:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 568 transitions. [2024-11-02 12:36:22,620 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 568 transitions. Word has length 87 [2024-11-02 12:36:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:22,621 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 568 transitions. [2024-11-02 12:36:22,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2024-11-02 12:36:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 568 transitions. [2024-11-02 12:36:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-02 12:36:22,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:22,628 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:22,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:36:22,629 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:22,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:22,629 INFO L85 PathProgramCache]: Analyzing trace with hash -533796936, now seen corresponding path program 1 times [2024-11-02 12:36:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:22,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919499433] [2024-11-02 12:36:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:22,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:36:22,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:22,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919499433] [2024-11-02 12:36:22,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919499433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:36:22,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936716690] [2024-11-02 12:36:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:22,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:36:22,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:36:22,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:36:23,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:36:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:23,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:36:23,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:36:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:36:23,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:36:23,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936716690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:23,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:36:23,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:36:23,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751084116] [2024-11-02 12:36:23,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:23,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:23,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:23,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:23,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:36:23,417 INFO L87 Difference]: Start difference. First operand 358 states and 568 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-02 12:36:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:23,825 INFO L93 Difference]: Finished difference Result 500 states and 770 transitions. [2024-11-02 12:36:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 91 [2024-11-02 12:36:23,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:23,829 INFO L225 Difference]: With dead ends: 500 [2024-11-02 12:36:23,829 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:36:23,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:36:23,831 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:23,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 24 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:36:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:36:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:36:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:36:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:36:23,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2024-11-02 12:36:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:23,834 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:36:23,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-02 12:36:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:36:23,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:36:23,910 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:36:23,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:36:24,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:36:24,119 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-02 12:36:24,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:36:24,155 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:36:24,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:36:24 BoogieIcfgContainer [2024-11-02 12:36:24,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:36:24,181 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:36:24,181 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:36:24,181 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:36:24,182 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:18" (3/4) ... [2024-11-02 12:36:24,188 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:36:24,207 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2024-11-02 12:36:24,208 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-02 12:36:24,209 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-02 12:36:24,210 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:36:24,392 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:36:24,392 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:36:24,392 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:36:24,393 INFO L158 Benchmark]: Toolchain (without parser) took 7990.12ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 80.6MB in the beginning and 138.7MB in the end (delta: -58.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2024-11-02 12:36:24,393 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:36:24,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 645.59ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 50.4MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-02 12:36:24,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.18ms. Allocated memory is still 117.4MB. Free memory was 50.4MB in the beginning and 86.5MB in the end (delta: -36.1MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-11-02 12:36:24,394 INFO L158 Benchmark]: Boogie Preprocessor took 59.94ms. Allocated memory is still 117.4MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 12:36:24,394 INFO L158 Benchmark]: RCFGBuilder took 1758.60ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 82.3MB in the beginning and 77.7MB in the end (delta: 4.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2024-11-02 12:36:24,395 INFO L158 Benchmark]: TraceAbstraction took 5184.63ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 77.7MB in the beginning and 152.3MB in the end (delta: -74.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:36:24,397 INFO L158 Benchmark]: Witness Printer took 211.29ms. Allocated memory is still 192.9MB. Free memory was 152.3MB in the beginning and 138.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 12:36:24,398 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 645.59ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 50.4MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.18ms. Allocated memory is still 117.4MB. Free memory was 50.4MB in the beginning and 86.5MB in the end (delta: -36.1MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.94ms. Allocated memory is still 117.4MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1758.60ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 82.3MB in the beginning and 77.7MB in the end (delta: 4.6MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5184.63ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 77.7MB in the beginning and 152.3MB in the end (delta: -74.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 211.29ms. Allocated memory is still 192.9MB. Free memory was 152.3MB in the beginning and 138.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 483]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1029 IncrementalHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 306 mSolverCounterUnsat, 139 mSDtfsCounter, 1029 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=3, InterpolantAutomatonStates: 15, 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, 71 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 491 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 485 ConstructedInterpolants, 0 QuantifiedInterpolants, 1066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 83/86 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((a16 < 6) || ((a21 == 1) && (15 <= a8))) || (a20 == 1)) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:36:24,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950eca20-c560-4604-8f03-1d83c1384277/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE