./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ce92743863c5d30c478a48a973506d73113681a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:20,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:20,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:20,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:20,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:20,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:20,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:20,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:20,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:20,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:20,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:20,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:20,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:20,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:20,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:20,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:20,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:20,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:20,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:20,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:20,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:20,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:20,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:20,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:20,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:20,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:20,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:20,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:20,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:20,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:20,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:20,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:20,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:20,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:20,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:20,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:20,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:20,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:20,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:20,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:20,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:20,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:20,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:20,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:20,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:20,352 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:20,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:20,352 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:20,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:20,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:20,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:20,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:20,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:20,362 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:20,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:20,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:20,363 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:20,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:20,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:20,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:20,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:20,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:20,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:20,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:20,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:20,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:20,367 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:20,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:20,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:20,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:20,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:20,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:20,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:20,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:20,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:20,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:20,372 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:20,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:20,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:20,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:20,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:20,374 INFO L138 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_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ce92743863c5d30c478a48a973506d73113681a [2021-10-11 02:22:20,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:20,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:20,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:20,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:20,701 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:20,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2021-10-11 02:22:20,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/data/df92f84c6/7637be2a482d458aa2fee950318761ab/FLAG5e3f5d66f [2021-10-11 02:22:21,468 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:21,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2021-10-11 02:22:21,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/data/df92f84c6/7637be2a482d458aa2fee950318761ab/FLAG5e3f5d66f [2021-10-11 02:22:21,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/data/df92f84c6/7637be2a482d458aa2fee950318761ab [2021-10-11 02:22:21,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:21,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:21,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:21,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:21,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:21,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:21,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68746894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21, skipping insertion in model container [2021-10-11 02:22:21,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:21,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:21,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:21,795 WARN L226 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_542bd5c3-615f-414f-9627-cd7ce76dfc8d/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[335,348] [2021-10-11 02:22:21,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:21,873 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:21,887 WARN L226 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_542bd5c3-615f-414f-9627-cd7ce76dfc8d/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c[335,348] [2021-10-11 02:22:21,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:21,961 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:21,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21 WrapperNode [2021-10-11 02:22:21,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:21,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:21,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:21,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:21,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:21,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:22,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:22,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:22,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:22,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... [2021-10-11 02:22:22,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:22,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:22,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:22,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:22,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:22,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:23,194 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##104: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0; [2021-10-11 02:22:23,195 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume !(1 == ~q_free~0); [2021-10-11 02:22:23,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:23,891 INFO L299 CfgBuilder]: Removed 70 assume(true) statements. [2021-10-11 02:22:23,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:23 BoogieIcfgContainer [2021-10-11 02:22:23,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:23,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:23,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:23,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:23,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:21" (1/3) ... [2021-10-11 02:22:23,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654b3294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:23, skipping insertion in model container [2021-10-11 02:22:23,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:21" (2/3) ... [2021-10-11 02:22:23,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654b3294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:23, skipping insertion in model container [2021-10-11 02:22:23,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:23" (3/3) ... [2021-10-11 02:22:23,910 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2021-10-11 02:22:23,923 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:23,927 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:22:23,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:22:23,971 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:23,971 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:23,971 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:23,971 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:23,972 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:23,972 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:23,972 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:23,972 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-10-11 02:22:23,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:22:23,997 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:23,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:23,998 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:24,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1779463480, now seen corresponding path program 1 times [2021-10-11 02:22:24,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:24,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953441920] [2021-10-11 02:22:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:24,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953441920] [2021-10-11 02:22:24,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:24,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:24,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741332017] [2021-10-11 02:22:24,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:24,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:24,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:24,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:24,232 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-10-11 02:22:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:24,351 INFO L93 Difference]: Finished difference Result 172 states and 276 transitions. [2021-10-11 02:22:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:24,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 02:22:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:24,365 INFO L225 Difference]: With dead ends: 172 [2021-10-11 02:22:24,365 INFO L226 Difference]: Without dead ends: 105 [2021-10-11 02:22:24,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-11 02:22:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2021-10-11 02:22:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-10-11 02:22:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 151 transitions. [2021-10-11 02:22:24,413 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 151 transitions. Word has length 17 [2021-10-11 02:22:24,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:24,414 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 151 transitions. [2021-10-11 02:22:24,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:24,414 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 151 transitions. [2021-10-11 02:22:24,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 02:22:24,415 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:24,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:24,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:24,416 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1758629701, now seen corresponding path program 1 times [2021-10-11 02:22:24,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:24,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250513122] [2021-10-11 02:22:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:24,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250513122] [2021-10-11 02:22:24,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:24,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:24,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516082802] [2021-10-11 02:22:24,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:24,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:24,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:24,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:24,474 INFO L87 Difference]: Start difference. First operand 100 states and 151 transitions. Second operand 3 states. [2021-10-11 02:22:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:24,571 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2021-10-11 02:22:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:24,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-10-11 02:22:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:24,577 INFO L225 Difference]: With dead ends: 265 [2021-10-11 02:22:24,577 INFO L226 Difference]: Without dead ends: 171 [2021-10-11 02:22:24,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:24,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-11 02:22:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-10-11 02:22:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-10-11 02:22:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 243 transitions. [2021-10-11 02:22:24,621 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 243 transitions. Word has length 18 [2021-10-11 02:22:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:24,622 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 243 transitions. [2021-10-11 02:22:24,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 243 transitions. [2021-10-11 02:22:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 02:22:24,626 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:24,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:24,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:24,627 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:24,629 INFO L82 PathProgramCache]: Analyzing trace with hash -625606362, now seen corresponding path program 1 times [2021-10-11 02:22:24,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:24,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220609464] [2021-10-11 02:22:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:24,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220609464] [2021-10-11 02:22:24,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:24,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:24,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188411548] [2021-10-11 02:22:24,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:24,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:24,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:24,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:24,803 INFO L87 Difference]: Start difference. First operand 169 states and 243 transitions. Second operand 3 states. [2021-10-11 02:22:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:24,879 INFO L93 Difference]: Finished difference Result 301 states and 447 transitions. [2021-10-11 02:22:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:24,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-10-11 02:22:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:24,882 INFO L225 Difference]: With dead ends: 301 [2021-10-11 02:22:24,883 INFO L226 Difference]: Without dead ends: 212 [2021-10-11 02:22:24,884 INFO L677 BasicCegarLoop]: 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 [2021-10-11 02:22:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-11 02:22:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 188. [2021-10-11 02:22:24,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2021-10-11 02:22:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 273 transitions. [2021-10-11 02:22:24,917 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 273 transitions. Word has length 26 [2021-10-11 02:22:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:24,918 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 273 transitions. [2021-10-11 02:22:24,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 273 transitions. [2021-10-11 02:22:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-11 02:22:24,927 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:24,928 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:24,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:22:24,928 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2103273818, now seen corresponding path program 1 times [2021-10-11 02:22:24,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:24,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270113968] [2021-10-11 02:22:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:22:25,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270113968] [2021-10-11 02:22:25,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:25,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:25,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756596539] [2021-10-11 02:22:25,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:25,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:25,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:25,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:25,093 INFO L87 Difference]: Start difference. First operand 188 states and 273 transitions. Second operand 3 states. [2021-10-11 02:22:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:25,138 INFO L93 Difference]: Finished difference Result 435 states and 647 transitions. [2021-10-11 02:22:25,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:25,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-10-11 02:22:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:25,142 INFO L225 Difference]: With dead ends: 435 [2021-10-11 02:22:25,143 INFO L226 Difference]: Without dead ends: 327 [2021-10-11 02:22:25,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-10-11 02:22:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2021-10-11 02:22:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:22:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 477 transitions. [2021-10-11 02:22:25,181 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 477 transitions. Word has length 40 [2021-10-11 02:22:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:25,182 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 477 transitions. [2021-10-11 02:22:25,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 477 transitions. [2021-10-11 02:22:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-11 02:22:25,184 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:25,184 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:25,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:22:25,184 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:25,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:25,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2095783869, now seen corresponding path program 1 times [2021-10-11 02:22:25,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:25,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843670997] [2021-10-11 02:22:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:25,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843670997] [2021-10-11 02:22:25,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:25,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:25,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68013347] [2021-10-11 02:22:25,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:25,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:25,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:25,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:25,294 INFO L87 Difference]: Start difference. First operand 323 states and 477 transitions. Second operand 3 states. [2021-10-11 02:22:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:25,348 INFO L93 Difference]: Finished difference Result 499 states and 745 transitions. [2021-10-11 02:22:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:25,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2021-10-11 02:22:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:25,349 INFO L225 Difference]: With dead ends: 499 [2021-10-11 02:22:25,350 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:25,351 INFO L677 BasicCegarLoop]: 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 [2021-10-11 02:22:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:25,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-11 02:22:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:25,353 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:25,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:25,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:25,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:22:25,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:25,574 INFO L262 CegarLoopResult]: For program point L68-3(lines 68 77) no Hoare annotation was computed. [2021-10-11 02:22:25,574 INFO L262 CegarLoopResult]: For program point L68-5(lines 68 77) no Hoare annotation was computed. [2021-10-11 02:22:25,574 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-10-11 02:22:25,574 INFO L262 CegarLoopResult]: For program point L69(lines 69 74) no Hoare annotation was computed. [2021-10-11 02:22:25,575 INFO L262 CegarLoopResult]: For program point L69-1(lines 69 74) no Hoare annotation was computed. [2021-10-11 02:22:25,575 INFO L262 CegarLoopResult]: For program point L69-2(lines 69 74) no Hoare annotation was computed. [2021-10-11 02:22:25,575 INFO L258 CegarLoopResult]: At program point L502(lines 502 511) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,575 INFO L258 CegarLoopResult]: At program point L502-1(lines 502 511) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,576 INFO L262 CegarLoopResult]: For program point L141(lines 141 153) no Hoare annotation was computed. [2021-10-11 02:22:25,576 INFO L258 CegarLoopResult]: At program point L108(lines 86 110) the Hoare annotation is: (and (<= ~c_dr_pc~0 0) (<= ~p_dw_pc~0 0) (<= 2 ~slow_clk_edge~0)) [2021-10-11 02:22:25,576 INFO L258 CegarLoopResult]: At program point L108-1(lines 86 110) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,576 INFO L258 CegarLoopResult]: At program point L108-2(lines 86 110) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,577 INFO L262 CegarLoopResult]: For program point L407(lines 407 411) no Hoare annotation was computed. [2021-10-11 02:22:25,577 INFO L262 CegarLoopResult]: For program point L407-1(lines 402 442) no Hoare annotation was computed. [2021-10-11 02:22:25,577 INFO L262 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-11 02:22:25,577 INFO L262 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-10-11 02:22:25,577 INFO L262 CegarLoopResult]: For program point L144(lines 144 152) no Hoare annotation was computed. [2021-10-11 02:22:25,578 INFO L265 CegarLoopResult]: At program point L12-1(lines 190 244) the Hoare annotation is: true [2021-10-11 02:22:25,578 INFO L258 CegarLoopResult]: At program point L145(lines 140 184) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,578 INFO L258 CegarLoopResult]: At program point L79(lines 57 81) the Hoare annotation is: (and (<= ~c_dr_pc~0 0) (<= ~p_dw_pc~0 0) (<= 2 ~slow_clk_edge~0)) [2021-10-11 02:22:25,578 INFO L258 CegarLoopResult]: At program point L79-1(lines 57 81) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,578 INFO L258 CegarLoopResult]: At program point L79-2(lines 57 81) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,579 INFO L258 CegarLoopResult]: At program point L443(lines 396 448) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,579 INFO L262 CegarLoopResult]: For program point L147(lines 147 151) no Hoare annotation was computed. [2021-10-11 02:22:25,579 INFO L258 CegarLoopResult]: At program point L412(lines 402 442) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,579 INFO L262 CegarLoopResult]: For program point L515(lines 515 519) no Hoare annotation was computed. [2021-10-11 02:22:25,579 INFO L262 CegarLoopResult]: For program point L416(lines 416 423) no Hoare annotation was computed. [2021-10-11 02:22:25,580 INFO L265 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-10-11 02:22:25,580 INFO L258 CegarLoopResult]: At program point L483-1(lines 317 520) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,580 INFO L262 CegarLoopResult]: For program point L87(lines 87 96) no Hoare annotation was computed. [2021-10-11 02:22:25,580 INFO L262 CegarLoopResult]: For program point L87-2(lines 86 110) no Hoare annotation was computed. [2021-10-11 02:22:25,580 INFO L262 CegarLoopResult]: For program point L87-3(lines 87 96) no Hoare annotation was computed. [2021-10-11 02:22:25,581 INFO L262 CegarLoopResult]: For program point L87-5(lines 86 110) no Hoare annotation was computed. [2021-10-11 02:22:25,581 INFO L262 CegarLoopResult]: For program point L87-6(lines 87 96) no Hoare annotation was computed. [2021-10-11 02:22:25,581 INFO L262 CegarLoopResult]: For program point L87-8(lines 86 110) no Hoare annotation was computed. [2021-10-11 02:22:25,581 INFO L262 CegarLoopResult]: For program point L88(lines 88 93) no Hoare annotation was computed. [2021-10-11 02:22:25,581 INFO L262 CegarLoopResult]: For program point L88-1(lines 88 93) no Hoare annotation was computed. [2021-10-11 02:22:25,582 INFO L262 CegarLoopResult]: For program point L88-2(lines 88 93) no Hoare annotation was computed. [2021-10-11 02:22:25,582 INFO L258 CegarLoopResult]: At program point L156-1(lines 140 184) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,582 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:25,582 INFO L262 CegarLoopResult]: For program point L58(lines 58 67) no Hoare annotation was computed. [2021-10-11 02:22:25,582 INFO L262 CegarLoopResult]: For program point L58-2(lines 57 81) no Hoare annotation was computed. [2021-10-11 02:22:25,583 INFO L262 CegarLoopResult]: For program point L58-3(lines 58 67) no Hoare annotation was computed. [2021-10-11 02:22:25,583 INFO L262 CegarLoopResult]: For program point L58-5(lines 57 81) no Hoare annotation was computed. [2021-10-11 02:22:25,583 INFO L262 CegarLoopResult]: For program point L58-6(lines 58 67) no Hoare annotation was computed. [2021-10-11 02:22:25,583 INFO L262 CegarLoopResult]: For program point L58-8(lines 57 81) no Hoare annotation was computed. [2021-10-11 02:22:25,583 INFO L265 CegarLoopResult]: At program point L521(lines 468 526) the Hoare annotation is: true [2021-10-11 02:22:25,583 INFO L262 CegarLoopResult]: For program point L191(lines 191 199) no Hoare annotation was computed. [2021-10-11 02:22:25,584 INFO L262 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2021-10-11 02:22:25,584 INFO L262 CegarLoopResult]: For program point L59-1(lines 59 64) no Hoare annotation was computed. [2021-10-11 02:22:25,584 INFO L262 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2021-10-11 02:22:25,584 INFO L262 CegarLoopResult]: For program point L226(lines 226 238) no Hoare annotation was computed. [2021-10-11 02:22:25,584 INFO L262 CegarLoopResult]: For program point L227(lines 227 233) no Hoare annotation was computed. [2021-10-11 02:22:25,585 INFO L258 CegarLoopResult]: At program point L194(lines 194 198) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,585 INFO L258 CegarLoopResult]: At program point L427(lines 402 442) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,585 INFO L258 CegarLoopResult]: At program point L163(lines 140 184) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2021-10-11 02:22:25,585 INFO L262 CegarLoopResult]: For program point L97-1(lines 97 106) no Hoare annotation was computed. [2021-10-11 02:22:25,585 INFO L262 CegarLoopResult]: For program point L97-3(lines 97 106) no Hoare annotation was computed. [2021-10-11 02:22:25,586 INFO L262 CegarLoopResult]: For program point L97-5(lines 97 106) no Hoare annotation was computed. [2021-10-11 02:22:25,586 INFO L262 CegarLoopResult]: For program point L98(lines 98 103) no Hoare annotation was computed. [2021-10-11 02:22:25,586 INFO L262 CegarLoopResult]: For program point L98-1(lines 98 103) no Hoare annotation was computed. [2021-10-11 02:22:25,586 INFO L262 CegarLoopResult]: For program point L98-2(lines 98 103) no Hoare annotation was computed. [2021-10-11 02:22:25,586 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-10-11 02:22:25,587 INFO L262 CegarLoopResult]: For program point L431(lines 431 438) no Hoare annotation was computed. [2021-10-11 02:22:25,587 INFO L262 CegarLoopResult]: For program point L68-1(lines 68 77) no Hoare annotation was computed. [2021-10-11 02:22:25,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:25 BoogieIcfgContainer [2021-10-11 02:22:25,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:25,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:25,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:25,622 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:25,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:23" (3/4) ... [2021-10-11 02:22:25,626 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:25,647 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 59 nodes and edges [2021-10-11 02:22:25,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:22:25,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:22:25,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:25,876 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542bd5c3-615f-414f-9627-cd7ce76dfc8d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:25,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:25,878 INFO L168 Benchmark]: Toolchain (without parser) took 4367.46 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 53.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:25,878 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory was 54.9 MB in the beginning and 54.8 MB in the end (delta: 42.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:25,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.93 ms. Allocated memory is still 100.7 MB. Free memory was 69.0 MB in the beginning and 73.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:25,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.72 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 71.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:25,880 INFO L168 Benchmark]: Boogie Preprocessor took 64.57 ms. Allocated memory is still 100.7 MB. Free memory was 71.1 MB in the beginning and 69.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:25,880 INFO L168 Benchmark]: RCFGBuilder took 1788.82 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 64.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:25,880 INFO L168 Benchmark]: TraceAbstraction took 1725.38 ms. Allocated memory is still 121.6 MB. Free memory was 63.4 MB in the beginning and 61.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 343.2 kB. Max. memory is 16.1 GB. [2021-10-11 02:22:25,881 INFO L168 Benchmark]: Witness Printer took 254.53 ms. Allocated memory is still 121.6 MB. Free memory was 61.8 MB in the beginning and 53.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:25,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory was 54.9 MB in the beginning and 54.8 MB in the end (delta: 42.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 449.93 ms. Allocated memory is still 100.7 MB. Free memory was 69.0 MB in the beginning and 73.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.72 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 71.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.57 ms. Allocated memory is still 100.7 MB. Free memory was 71.1 MB in the beginning and 69.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1788.82 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 64.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1725.38 ms. Allocated memory is still 121.6 MB. Free memory was 63.4 MB in the beginning and 61.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 343.2 kB. Max. memory is 16.1 GB. * Witness Printer took 254.53 ms. Allocated memory is still 121.6 MB. Free memory was 61.8 MB in the beginning and 53.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (c_dr_pc <= 0 && p_dw_pc <= 0) && 2 <= slow_clk_edge - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 317]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 502]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 402]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 502]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 468]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 190]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: (c_dr_pc <= 0 && p_dw_pc <= 0) && 2 <= slow_clk_edge - InvariantResult [Line: 402]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 396]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: c_dr_pc <= 0 || c_dr_pc == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 489 SDtfs, 268 SDslu, 335 SDs, 0 SdLazy, 83 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 19 PreInvPairs, 137 NumberOfFragments, 121 HoareAnnotationTreeSize, 19 FomulaSimplifications, 681 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 19 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 7283 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 28/28 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 correct! Received shutdown request...