./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.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_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/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_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/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_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/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 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:38,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:38,350 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:30:38,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:38,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:38,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:38,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:38,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:38,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:38,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:38,399 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:38,401 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:38,401 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:38,402 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:38,402 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:38,402 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:38,403 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:38,403 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:38,404 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:38,407 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:38,408 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:38,408 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:38,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:38,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:38,410 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:38,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:38,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:38,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:38,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:38,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:38,412 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:38,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:38,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:38,413 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:38,414 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:38,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:38,415 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:38,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:38,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:38,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:38,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:38,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:38,417 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:38,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:38,418 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:38,419 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:38,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:38,419 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_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 [2024-11-02 12:30:38,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:38,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:38,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:38,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:38,753 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:38,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c Unable to find full path for "g++" [2024-11-02 12:30:41,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:41,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:41,376 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2024-11-02 12:30:41,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/data/ec66d6112/1e82fabbd059436a80e3624fbbc84d1e/FLAGba394560f [2024-11-02 12:30:41,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/data/ec66d6112/1e82fabbd059436a80e3624fbbc84d1e [2024-11-02 12:30:41,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:41,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:41,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:41,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:41,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:41,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:41" (1/1) ... [2024-11-02 12:30:41,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ad2378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:41, skipping insertion in model container [2024-11-02 12:30:41,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:41" (1/1) ... [2024-11-02 12:30:41,756 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:41,985 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_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[640,653] [2024-11-02 12:30:42,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:42,064 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:42,077 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_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[640,653] [2024-11-02 12:30:42,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:42,131 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:42,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42 WrapperNode [2024-11-02 12:30:42,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:42,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:42,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:42,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:42,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,183 INFO L138 Inliner]: procedures = 31, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 227 [2024-11-02 12:30:42,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:42,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:42,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:42,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:42,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:42,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:42,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:42,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:42,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (1/1) ... [2024-11-02 12:30:42,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:42,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:42,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:42,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-02 12:30:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-02 12:30:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-02 12:30:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-02 12:30:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-02 12:30:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-02 12:30:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-02 12:30:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-02 12:30:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-02 12:30:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-02 12:30:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-02 12:30:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-02 12:30:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-02 12:30:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-02 12:30:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-02 12:30:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-02 12:30:42,369 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:42,371 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:42,822 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(1 == ~q_free~0); [2024-11-02 12:30:42,823 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2024-11-02 12:30:42,868 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:42,868 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:43,013 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:43,014 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 12:30:43,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:43 BoogieIcfgContainer [2024-11-02 12:30:43,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:43,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:43,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:43,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:43,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:41" (1/3) ... [2024-11-02 12:30:43,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c8eaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:43, skipping insertion in model container [2024-11-02 12:30:43,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:42" (2/3) ... [2024-11-02 12:30:43,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c8eaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:43, skipping insertion in model container [2024-11-02 12:30:43,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:43" (3/3) ... [2024-11-02 12:30:43,024 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2024-11-02 12:30:43,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:43,045 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:30:43,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:43,124 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;@5add6ddd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:43,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:30:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 53 states have (on average 1.490566037735849) internal successors, (79), 57 states have internal predecessors, (79), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-02 12:30:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-02 12:30:43,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:43,142 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] [2024-11-02 12:30:43,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:43,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash -744371592, now seen corresponding path program 1 times [2024-11-02 12:30:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069694913] [2024-11-02 12:30:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:43,708 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 12:30:43,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069694913] [2024-11-02 12:30:43,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069694913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:43,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:43,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:30:43,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777722360] [2024-11-02 12:30:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:43,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:30:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:30:43,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:43,792 INFO L87 Difference]: Start difference. First operand has 79 states, 53 states have (on average 1.490566037735849) internal successors, (79), 57 states have internal predecessors, (79), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:30:44,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:44,222 INFO L93 Difference]: Finished difference Result 285 states and 409 transitions. [2024-11-02 12:30:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:30:44,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 43 [2024-11-02 12:30:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:44,236 INFO L225 Difference]: With dead ends: 285 [2024-11-02 12:30:44,237 INFO L226 Difference]: Without dead ends: 205 [2024-11-02 12:30:44,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:30:44,245 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 167 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:44,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 254 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:30:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-02 12:30:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 194. [2024-11-02 12:30:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 136 states have (on average 1.3676470588235294) internal successors, (186), 138 states have internal predecessors, (186), 36 states have call successors, (36), 22 states have call predecessors, (36), 21 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2024-11-02 12:30:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 259 transitions. [2024-11-02 12:30:44,332 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 259 transitions. Word has length 43 [2024-11-02 12:30:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:44,333 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 259 transitions. [2024-11-02 12:30:44,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:30:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 259 transitions. [2024-11-02 12:30:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-02 12:30:44,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:44,336 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] [2024-11-02 12:30:44,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:30:44,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:44,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash -600838586, now seen corresponding path program 1 times [2024-11-02 12:30:44,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:44,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370356586] [2024-11-02 12:30:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:44,549 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 12:30:44,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:44,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370356586] [2024-11-02 12:30:44,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370356586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:44,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:44,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:30:44,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41090722] [2024-11-02 12:30:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:44,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:30:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:44,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:30:44,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:30:44,559 INFO L87 Difference]: Start difference. First operand 194 states and 259 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:30:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:45,532 INFO L93 Difference]: Finished difference Result 731 states and 982 transitions. [2024-11-02 12:30:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 12:30:45,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 44 [2024-11-02 12:30:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:45,536 INFO L225 Difference]: With dead ends: 731 [2024-11-02 12:30:45,536 INFO L226 Difference]: Without dead ends: 265 [2024-11-02 12:30:45,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:45,543 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 506 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:45,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 515 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 12:30:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-02 12:30:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 180. [2024-11-02 12:30:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 124 states have internal predecessors, (153), 36 states have call successors, (36), 22 states have call predecessors, (36), 21 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-02 12:30:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 223 transitions. [2024-11-02 12:30:45,584 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 223 transitions. Word has length 44 [2024-11-02 12:30:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:45,584 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 223 transitions. [2024-11-02 12:30:45,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-02 12:30:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 223 transitions. [2024-11-02 12:30:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-02 12:30:45,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:45,587 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] [2024-11-02 12:30:45,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:30:45,587 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:45,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash 915894849, now seen corresponding path program 1 times [2024-11-02 12:30:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:45,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566344467] [2024-11-02 12:30:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:45,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:45,868 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 12:30:45,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566344467] [2024-11-02 12:30:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566344467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:45,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:45,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:30:45,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273157668] [2024-11-02 12:30:45,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:45,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:30:45,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:30:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:30:45,872 INFO L87 Difference]: Start difference. First operand 180 states and 223 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:30:46,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:46,590 INFO L93 Difference]: Finished difference Result 482 states and 591 transitions. [2024-11-02 12:30:46,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:30:46,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2024-11-02 12:30:46,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:46,597 INFO L225 Difference]: With dead ends: 482 [2024-11-02 12:30:46,598 INFO L226 Difference]: Without dead ends: 308 [2024-11-02 12:30:46,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:30:46,600 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 206 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:46,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 297 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:30:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-02 12:30:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 282. [2024-11-02 12:30:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 190 states have (on average 1.236842105263158) internal successors, (235), 192 states have internal predecessors, (235), 56 states have call successors, (56), 36 states have call predecessors, (56), 35 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-02 12:30:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 345 transitions. [2024-11-02 12:30:46,691 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 345 transitions. Word has length 45 [2024-11-02 12:30:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,691 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 345 transitions. [2024-11-02 12:30:46,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-02 12:30:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 345 transitions. [2024-11-02 12:30:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-02 12:30:46,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:46,695 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] [2024-11-02 12:30:46,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:30:46,695 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:46,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:46,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1196231434, now seen corresponding path program 1 times [2024-11-02 12:30:46,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:46,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078155312] [2024-11-02 12:30:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:46,779 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 12:30:46,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:46,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078155312] [2024-11-02 12:30:46,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078155312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:46,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:46,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:46,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759179811] [2024-11-02 12:30:46,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:46,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:46,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:46,784 INFO L87 Difference]: Start difference. First operand 282 states and 345 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:30:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:46,880 INFO L93 Difference]: Finished difference Result 547 states and 681 transitions. [2024-11-02 12:30:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-11-02 12:30:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:46,883 INFO L225 Difference]: With dead ends: 547 [2024-11-02 12:30:46,883 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:30:46,885 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 12:30:46,887 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:46,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 69 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:30:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:30:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:30:46,889 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 12:30:46,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:30:46,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2024-11-02 12:30:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,891 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:30:46,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-02 12:30:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:30:46,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:30:46,896 INFO L782 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:30:46,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:30:46,902 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-02 12:30:46,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:30:49,754 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:30:49,793 WARN L156 FloydHoareUtils]: Requires clause for activate_threads contained old-variable. Original clause: (let ((.cse0 (= ~c_dr_pc~0 0))) (and (or (= |old(~p_dw_st~0)| ~p_dw_st~0) (not .cse0)) (or (and .cse0 (= ~p_dw_i~0 1)) (= ~c_dr_pc~0 1)))) Eliminated clause: (or (and (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)) (= ~c_dr_pc~0 1)) [2024-11-02 12:30:49,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:30:49 BoogieIcfgContainer [2024-11-02 12:30:49,826 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:30:49,827 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:30:49,828 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:30:49,828 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:30:49,830 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:43" (3/4) ... [2024-11-02 12:30:49,836 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:30:49,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure activate_threads [2024-11-02 12:30:49,841 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure exists_runnable_thread [2024-11-02 12:30:49,841 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_do_read_c_triggered [2024-11-02 12:30:49,841 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fire_delta_events [2024-11-02 12:30:49,841 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure update_channels [2024-11-02 12:30:49,841 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reset_delta_events [2024-11-02 12:30:49,842 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_do_write_p_triggered [2024-11-02 12:30:49,842 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure error [2024-11-02 12:30:49,853 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-02 12:30:49,853 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-11-02 12:30:49,854 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-02 12:30:49,857 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:30:50,012 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:30:50,012 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:30:50,013 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:30:50,014 INFO L158 Benchmark]: Toolchain (without parser) took 8315.58ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 99.6MB in the beginning and 153.2MB in the end (delta: -53.6MB). Peak memory consumption was 97.2MB. Max. memory is 16.1GB. [2024-11-02 12:30:50,014 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:30:50,014 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.35ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 83.8MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 12:30:50,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.09ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 81.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:30:50,015 INFO L158 Benchmark]: Boogie Preprocessor took 29.71ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 79.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:30:50,016 INFO L158 Benchmark]: RCFGBuilder took 799.74ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 79.9MB in the beginning and 140.2MB in the end (delta: -60.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-11-02 12:30:50,016 INFO L158 Benchmark]: TraceAbstraction took 6809.62ms. Allocated memory is still 186.6MB. Free memory was 140.2MB in the beginning and 54.9MB in the end (delta: 85.4MB). Peak memory consumption was 92.4MB. Max. memory is 16.1GB. [2024-11-02 12:30:50,016 INFO L158 Benchmark]: Witness Printer took 185.46ms. Allocated memory is still 186.6MB. Free memory was 54.9MB in the beginning and 153.2MB in the end (delta: -98.4MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-11-02 12:30:50,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 44.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.35ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 83.8MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.09ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 81.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.71ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 79.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 799.74ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 79.9MB in the beginning and 140.2MB in the end (delta: -60.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6809.62ms. Allocated memory is still 186.6MB. Free memory was 140.2MB in the beginning and 54.9MB in the end (delta: 85.4MB). Peak memory consumption was 92.4MB. Max. memory is 16.1GB. * Witness Printer took 185.46ms. Allocated memory is still 186.6MB. Free memory was 54.9MB in the beginning and 153.2MB in the end (delta: -98.4MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 966 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 950 mSDsluCounter, 1135 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 661 mSDsCounter, 259 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1055 IncrementalHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 259 mSolverCounterUnsat, 474 mSDtfsCounter, 1055 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 122 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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: 491]: Loop Invariant Derived loop invariant: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) - InvariantResult [Line: 210]: Location Invariant Derived location invariant: 1 - InvariantResult [Line: 254]: Location Invariant Derived location invariant: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) - InvariantResult [Line: 410]: Loop Invariant Derived loop invariant: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) - InvariantResult [Line: 164]: Location Invariant Derived location invariant: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) - InvariantResult [Line: 287]: Location Invariant Derived location invariant: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) - ProcedureContractResult [Line: 379]: Procedure Contract for activate_threads Derived contract for procedure activate_threads. Requires: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) Ensures: (((((c_dr_pc != 0) || (p_dw_st == 0)) || (\old(p_dw_st) != 0)) && (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1))) && ((((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (q_read_ev == \old(q_read_ev))) && (q_write_ev == \old(q_write_ev))) && (q_req_up == \old(q_req_up))) && (q_ev == \old(q_ev))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) - ProcedureContractResult [Line: 287]: Procedure Contract for exists_runnable_thread Derived contract for procedure exists_runnable_thread. Requires: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) Ensures: ((((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) && ((((((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (q_read_ev == \old(q_read_ev))) && (q_write_ev == \old(q_write_ev))) && (q_req_up == \old(q_req_up))) && (q_ev == \old(q_ev))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_st == \old(p_dw_st))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_st == \old(c_dr_st))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) - ProcedureContractResult [Line: 91]: Procedure Contract for is_do_read_c_triggered Derived contract for procedure is_do_read_c_triggered. Requires: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) Ensures: ((((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) && ((((((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (q_read_ev == \old(q_read_ev))) && (q_write_ev == \old(q_write_ev))) && (q_req_up == \old(q_req_up))) && (q_ev == \old(q_ev))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_st == \old(p_dw_st))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_st == \old(c_dr_st))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) - ProcedureContractResult [Line: 307]: Procedure Contract for fire_delta_events Derived contract for procedure fire_delta_events. Requires: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) Ensures: ((((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) && ((((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (q_req_up == \old(q_req_up))) && (q_ev == \old(q_ev))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_st == \old(p_dw_st))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_st == \old(c_dr_st))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) - ProcedureContractResult [Line: 254]: Procedure Contract for update_channels Derived contract for procedure update_channels. Requires: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) Ensures: ((((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) && ((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_st == \old(p_dw_st))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_st == \old(c_dr_st))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) - ProcedureContractResult [Line: 325]: Procedure Contract for reset_delta_events Derived contract for procedure reset_delta_events. Requires: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) Ensures: ((((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) && ((((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (q_req_up == \old(q_req_up))) && (q_ev == \old(q_ev))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_st == \old(p_dw_st))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_st == \old(c_dr_st))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) - ProcedureContractResult [Line: 62]: Procedure Contract for is_do_write_p_triggered Derived contract for procedure is_do_write_p_triggered. Requires: (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1)) Ensures: ((((((p_dw_st != 0) || (p_dw_pc == 1)) || (c_dr_pc != p_dw_pc)) || (\result == 0)) && (((c_dr_pc == 0) && (p_dw_i == 1)) || (c_dr_pc == 1))) && ((((((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (q_read_ev == \old(q_read_ev))) && (q_write_ev == \old(q_write_ev))) && (q_req_up == \old(q_req_up))) && (q_ev == \old(q_ev))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_st == \old(p_dw_st))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_st == \old(c_dr_st))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) - ProcedureContractResult [Line: 15]: Procedure Contract for error Derived contract for procedure error. Requires: 0 Ensures: (0 && ((((((((((((((((((((fast_clk_edge == \old(fast_clk_edge)) && (slow_clk_edge == \old(slow_clk_edge))) && (q_buf_0 == \old(q_buf_0))) && (q_free == \old(q_free))) && (q_read_ev == \old(q_read_ev))) && (q_write_ev == \old(q_write_ev))) && (q_req_up == \old(q_req_up))) && (q_ev == \old(q_ev))) && (p_num_write == \old(p_num_write))) && (p_last_write == \old(p_last_write))) && (p_dw_st == \old(p_dw_st))) && (p_dw_pc == \old(p_dw_pc))) && (p_dw_i == \old(p_dw_i))) && (c_num_read == \old(c_num_read))) && (c_last_read == \old(c_last_read))) && (c_dr_st == \old(c_dr_st))) && (c_dr_pc == \old(c_dr_pc))) && (c_dr_i == \old(c_dr_i))) && (a_t == \old(a_t))) && (t == \old(t)))) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:30:50,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58256478-b1a1-4cbd-a7cf-35de0a96d6d7/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