./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje --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 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:56:01,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:56:01,937 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:56:01,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:56:01,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:56:02,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:56:02,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:56:02,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:56:02,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:56:02,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:56:02,009 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:56:02,034 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:56:02,035 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:56:02,037 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:56:02,039 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:56:02,040 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:56:02,040 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:56:02,041 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:56:02,041 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:56:02,042 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:56:02,042 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:56:02,046 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:56:02,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:56:02,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:56:02,048 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:56:02,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:56:02,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:56:02,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:56:02,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:56:02,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:56:02,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:56:02,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:56:02,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:56:02,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:56:02,054 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:56:02,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:56:02,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:56:02,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:56:02,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:56:02,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:56:02,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:56:02,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:56:02,058 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:56:02,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:56:02,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:56:02,059 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:56:02,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:56:02,060 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_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 [2024-11-09 05:56:02,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:56:02,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:56:02,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:56:02,443 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:56:02,443 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:56:02,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i Unable to find full path for "g++" [2024-11-09 05:56:04,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:56:05,311 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:56:05,312 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2024-11-09 05:56:05,334 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/data/019a22cc6/9a85793cec9f485bb20d0b8d854d72e3/FLAGb4e5bee6f [2024-11-09 05:56:05,597 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/data/019a22cc6/9a85793cec9f485bb20d0b8d854d72e3 [2024-11-09 05:56:05,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:56:05,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:56:05,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:56:05,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:56:05,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:56:05,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:56:05" (1/1) ... [2024-11-09 05:56:05,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b29b0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:05, skipping insertion in model container [2024-11-09 05:56:05,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:56:05" (1/1) ... [2024-11-09 05:56:05,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:56:05,936 WARN L250 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_b69addb9-03fb-4c39-9e6e-0626c923f808/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2024-11-09 05:56:06,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:56:06,176 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:56:06,193 WARN L250 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_b69addb9-03fb-4c39-9e6e-0626c923f808/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2024-11-09 05:56:06,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:56:06,286 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:56:06,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06 WrapperNode [2024-11-09 05:56:06,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:56:06,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:56:06,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:56:06,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:56:06,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,340 INFO L138 Inliner]: procedures = 126, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2024-11-09 05:56:06,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:56:06,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:56:06,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:56:06,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:56:06,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:56:06,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:56:06,375 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:56:06,375 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:56:06,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (1/1) ... [2024-11-09 05:56:06,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:56:06,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:56:06,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:56:06,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:56:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2024-11-09 05:56:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2024-11-09 05:56:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:56:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-11-09 05:56:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-11-09 05:56:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:56:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2024-11-09 05:56:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2024-11-09 05:56:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:56:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:56:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:56:06,649 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:56:06,653 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:56:06,968 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-09 05:56:06,969 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:56:07,095 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:56:07,099 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:56:07,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:56:07 BoogieIcfgContainer [2024-11-09 05:56:07,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:56:07,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:56:07,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:56:07,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:56:07,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:56:05" (1/3) ... [2024-11-09 05:56:07,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506f7738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:56:07, skipping insertion in model container [2024-11-09 05:56:07,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:56:06" (2/3) ... [2024-11-09 05:56:07,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506f7738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:56:07, skipping insertion in model container [2024-11-09 05:56:07,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:56:07" (3/3) ... [2024-11-09 05:56:07,115 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2024-11-09 05:56:07,137 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:56:07,138 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:56:07,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:56:07,241 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;@49147fe2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:56:07,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:56:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 05:56:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 05:56:07,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:07,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 05:56:07,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:07,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash -938885129, now seen corresponding path program 1 times [2024-11-09 05:56:07,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:56:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058402835] [2024-11-09 05:56:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:56:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:56:07,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:56:07,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058402835] [2024-11-09 05:56:07,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058402835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:56:07,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:56:07,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:56:07,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662948844] [2024-11-09 05:56:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:56:07,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:56:07,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:56:07,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:56:07,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:56:07,677 INFO L87 Difference]: Start difference. First operand has 26 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 17 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:56:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:56:07,778 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2024-11-09 05:56:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:56:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 05:56:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:56:07,791 INFO L225 Difference]: With dead ends: 48 [2024-11-09 05:56:07,792 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 05:56:07,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:56:07,800 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:56:07,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:56:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 05:56:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 05:56:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:56:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-09 05:56:07,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2024-11-09 05:56:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:56:07,851 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-09 05:56:07,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:56:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-09 05:56:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:56:07,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:07,855 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:56:07,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:56:07,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:07,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1351367040, now seen corresponding path program 1 times [2024-11-09 05:56:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:56:07,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950565960] [2024-11-09 05:56:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:07,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:56:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:56:08,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:56:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950565960] [2024-11-09 05:56:08,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950565960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:56:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:56:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:56:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147606632] [2024-11-09 05:56:08,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:56:08,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:56:08,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:56:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:56:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:56:08,416 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:56:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:56:08,649 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2024-11-09 05:56:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:56:08,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-09 05:56:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:56:08,651 INFO L225 Difference]: With dead ends: 28 [2024-11-09 05:56:08,652 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 05:56:08,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:56:08,658 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:56:08,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:56:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 05:56:08,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-09 05:56:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:56:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-09 05:56:08,680 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 19 [2024-11-09 05:56:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:56:08,682 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-09 05:56:08,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:56:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-09 05:56:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:56:08,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:08,686 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:56:08,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:56:08,687 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:08,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1952156292, now seen corresponding path program 1 times [2024-11-09 05:56:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:56:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449548733] [2024-11-09 05:56:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:08,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:56:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:56:09,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:56:09,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449548733] [2024-11-09 05:56:09,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449548733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:56:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547539953] [2024-11-09 05:56:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:09,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:56:09,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:56:09,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:56:09,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:56:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:09,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-09 05:56:09,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:56:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:56:11,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:56:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:56:14,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547539953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:56:14,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [909723695] [2024-11-09 05:56:14,202 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 05:56:14,202 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:56:14,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:56:14,214 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:56:14,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:56:16,437 INFO L197 IcfgInterpreter]: Interpreting procedure list_add with input of size 14 for LOIs [2024-11-09 05:56:16,463 INFO L197 IcfgInterpreter]: Interpreting procedure __blast_assert with input of size 10 for LOIs [2024-11-09 05:56:16,466 INFO L197 IcfgInterpreter]: Interpreting procedure my_malloc with input of size 95 for LOIs [2024-11-09 05:56:16,747 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:56:23,168 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '424#(and (<= 1 |#StackHeapBarrier|) (= |~#head~0.offset| 0) (= 4 |~#head~0.base|))' at error location [2024-11-09 05:56:23,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:56:23,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:56:23,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 49 [2024-11-09 05:56:23,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646940327] [2024-11-09 05:56:23,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:56:23,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 05:56:23,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:56:23,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 05:56:23,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=3793, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 05:56:23,177 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 50 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:56:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:56:25,139 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2024-11-09 05:56:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 05:56:25,140 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 24 [2024-11-09 05:56:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:56:25,141 INFO L225 Difference]: With dead ends: 35 [2024-11-09 05:56:25,141 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 05:56:25,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=512, Invalid=6294, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 05:56:25,147 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 69 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:56:25,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 46 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:56:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 05:56:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-11-09 05:56:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:56:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-09 05:56:25,159 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2024-11-09 05:56:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:56:25,160 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-09 05:56:25,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 13 states have call successors, (13), 12 states have call predecessors, (13), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:56:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-09 05:56:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 05:56:25,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:25,162 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:56:25,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:56:25,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:56:25,367 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:25,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:25,367 INFO L85 PathProgramCache]: Analyzing trace with hash -127445979, now seen corresponding path program 1 times [2024-11-09 05:56:25,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:56:25,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720308193] [2024-11-09 05:56:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:56:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:56:25,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:56:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720308193] [2024-11-09 05:56:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720308193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:56:25,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:56:25,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:56:25,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439400340] [2024-11-09 05:56:25,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:56:25,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:56:25,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:56:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:56:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:56:25,630 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:56:25,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:56:25,728 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-09 05:56:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:56:25,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-11-09 05:56:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:56:25,730 INFO L225 Difference]: With dead ends: 34 [2024-11-09 05:56:25,730 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 05:56:25,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:56:25,732 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:56:25,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:56:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 05:56:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-09 05:56:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:56:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-09 05:56:25,744 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 30 [2024-11-09 05:56:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:56:25,744 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-09 05:56:25,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 05:56:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-09 05:56:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:56:25,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:25,746 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:56:25,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:56:25,747 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:25,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1636014217, now seen corresponding path program 1 times [2024-11-09 05:56:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:56:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554349090] [2024-11-09 05:56:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:56:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:56:25,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:56:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:56:25,819 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:56:25,820 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:56:25,821 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:56:25,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:56:25,828 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 05:56:25,906 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:56:25,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:56:25 BoogieIcfgContainer [2024-11-09 05:56:25,911 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:56:25,911 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:56:25,912 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:56:25,912 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:56:25,913 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:56:07" (3/4) ... [2024-11-09 05:56:25,914 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 05:56:25,982 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:56:25,982 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:56:25,983 INFO L158 Benchmark]: Toolchain (without parser) took 20380.75ms. Allocated memory was 123.7MB in the beginning and 299.9MB in the end (delta: 176.2MB). Free memory was 62.9MB in the beginning and 208.5MB in the end (delta: -145.6MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2024-11-09 05:56:25,984 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:56:25,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.04ms. Allocated memory was 123.7MB in the beginning and 172.0MB in the end (delta: 48.2MB). Free memory was 62.7MB in the beginning and 124.8MB in the end (delta: -62.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2024-11-09 05:56:25,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.81ms. Allocated memory is still 172.0MB. Free memory was 124.8MB in the beginning and 122.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:56:25,985 INFO L158 Benchmark]: Boogie Preprocessor took 31.69ms. Allocated memory is still 172.0MB. Free memory was 122.8MB in the beginning and 121.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:56:25,986 INFO L158 Benchmark]: RCFGBuilder took 725.56ms. Allocated memory is still 172.0MB. Free memory was 121.4MB in the beginning and 104.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 05:56:25,986 INFO L158 Benchmark]: TraceAbstraction took 18805.49ms. Allocated memory was 172.0MB in the beginning and 299.9MB in the end (delta: 127.9MB). Free memory was 103.9MB in the beginning and 212.7MB in the end (delta: -108.8MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2024-11-09 05:56:25,987 INFO L158 Benchmark]: Witness Printer took 71.16ms. Allocated memory is still 299.9MB. Free memory was 212.7MB in the beginning and 208.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:56:25,989 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.04ms. Allocated memory was 123.7MB in the beginning and 172.0MB in the end (delta: 48.2MB). Free memory was 62.7MB in the beginning and 124.8MB in the end (delta: -62.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.81ms. Allocated memory is still 172.0MB. Free memory was 124.8MB in the beginning and 122.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.69ms. Allocated memory is still 172.0MB. Free memory was 122.8MB in the beginning and 121.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 725.56ms. Allocated memory is still 172.0MB. Free memory was 121.4MB in the beginning and 104.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18805.49ms. Allocated memory was 172.0MB in the beginning and 299.9MB in the end (delta: 127.9MB). Free memory was 103.9MB in the beginning and 212.7MB in the end (delta: -108.8MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * Witness Printer took 71.16ms. Allocated memory is still 299.9MB. Free memory was 212.7MB in the beginning and 208.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L519] void * guard_malloc_counter = 0; [L534] struct list_head *elem = ((void *)0); [L544] static struct list_head head; [L546] struct list_head *dev1, *dev2; VAL [elem={0:0}, guard_malloc_counter={0:0}, head={4:0}] [L547] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [elem={0:0}, guard_malloc_counter={0:0}, head={4:0}] [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:0}, head={4:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L547] RET, EXPR my_malloc(sizeof(*dev1)) VAL [elem={0:0}, guard_malloc_counter={0:1}, head={4:0}] [L547] dev1 = my_malloc(sizeof(*dev1)) [L548] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [elem={0:0}, guard_malloc_counter={0:1}, head={4:0}] [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:1}, head={4:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L548] RET, EXPR my_malloc(sizeof(*dev2)) VAL [dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L548] dev2 = my_malloc(sizeof(*dev2)) [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L550] CALL list_add(dev2, &head) VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}, new={0:2}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] RET list_add(dev2, &head) VAL [dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L551] CALL list_add(dev1, &head) VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={4:0}, new={0:1}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new [L551] RET list_add(dev1, &head) VAL [dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L552] CALL list_del(dev2) [L541] COND FALSE !(entry==elem) [L552] RET list_del(dev2) [L553] CALL list_add(dev2, &head) VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}, new={0:2}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L553] RET list_add(dev2, &head) VAL [dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L554] CALL list_add(dev1, &head) VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [\old(head)={4:0}, \old(new)={0:1}, elem={0:1}, guard_malloc_counter={0:2}, head={4:0}, new={0:1}] [L536] CALL __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] [L6] reach_error() VAL [elem={0:1}, guard_malloc_counter={0:2}, head={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.6s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 243 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 178 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 938 IncrementalHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 65 mSDtfsCounter, 938 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, InterpolantAutomatonStates: 38, 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 1272 SizeOfPredicates, 15 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 20/34 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-09 05:56:26,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69addb9-03fb-4c39-9e6e-0626c923f808/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE