./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan --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-a4ecdab [2020-11-22 13:05:32,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:32,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:32,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:32,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:32,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:32,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:32,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:32,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:32,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:32,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:32,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:32,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:32,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:32,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:32,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:32,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:32,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:32,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:32,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:32,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:32,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:32,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:32,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:32,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:32,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:32,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:32,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:32,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:32,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:32,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:32,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:32,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:32,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:32,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:32,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:32,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:32,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:32,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:32,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:32,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:32,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:32,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:32,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:32,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:32,217 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:32,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:32,218 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:32,218 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:32,218 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:32,218 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:32,219 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:32,219 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:32,219 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:32,219 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:32,219 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:32,219 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:32,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:32,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:32,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:32,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:32,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:32,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:32,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:32,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:32,222 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:32,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:32,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:32,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:32,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:32,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:32,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:32,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:32,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:32,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:32,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:32,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:32,224 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:32,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:32,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:32,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:32,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:32,228 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-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ce92743863c5d30c478a48a973506d73113681a [2020-11-22 13:05:32,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:32,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:32,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:32,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:32,526 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:32,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2020-11-22 13:05:32,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/data/af773433b/b8fe064c8cf5461095d0b4af43da1859/FLAG3b26e3d9a [2020-11-22 13:05:33,113 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:33,113 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2020-11-22 13:05:33,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/data/af773433b/b8fe064c8cf5461095d0b4af43da1859/FLAG3b26e3d9a [2020-11-22 13:05:33,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/data/af773433b/b8fe064c8cf5461095d0b4af43da1859 [2020-11-22 13:05:33,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:33,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:33,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:33,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:33,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:33,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4db3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33, skipping insertion in model container [2020-11-22 13:05:33,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:33,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:33,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:33,792 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:33,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:33,889 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:33,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33 WrapperNode [2020-11-22 13:05:33,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:33,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:33,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:33,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:33,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:33,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:33,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:33,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:33,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... [2020-11-22 13:05:33,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:33,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:33,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:33,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:33,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/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 [2020-11-22 13:05:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:34,914 INFO L751 $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; [2020-11-22 13:05:34,914 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume !(1 == ~q_free~0); [2020-11-22 13:05:35,492 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:35,492 INFO L298 CfgBuilder]: Removed 74 assume(true) statements. [2020-11-22 13:05:35,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:35 BoogieIcfgContainer [2020-11-22 13:05:35,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:35,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:35,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:35,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:35,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:33" (1/3) ... [2020-11-22 13:05:35,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2f0ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:35, skipping insertion in model container [2020-11-22 13:05:35,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:33" (2/3) ... [2020-11-22 13:05:35,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2f0ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:35, skipping insertion in model container [2020-11-22 13:05:35,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:35" (3/3) ... [2020-11-22 13:05:35,503 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2020-11-22 13:05:35,514 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:35,519 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:05:35,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:05:35,556 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:35,556 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:35,556 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:35,556 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:35,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:35,557 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:35,557 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:35,557 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:35,571 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-22 13:05:35,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:05:35,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:35,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:35,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1633355974, now seen corresponding path program 1 times [2020-11-22 13:05:35,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:35,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624944960] [2020-11-22 13:05:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:35,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624944960] [2020-11-22 13:05:35,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:35,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:35,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367013615] [2020-11-22 13:05:35,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:35,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:35,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:35,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:35,841 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-11-22 13:05:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:35,956 INFO L93 Difference]: Finished difference Result 172 states and 276 transitions. [2020-11-22 13:05:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:35,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-22 13:05:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:35,980 INFO L225 Difference]: With dead ends: 172 [2020-11-22 13:05:35,987 INFO L226 Difference]: Without dead ends: 105 [2020-11-22 13:05:35,991 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 [2020-11-22 13:05:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-22 13:05:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2020-11-22 13:05:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-22 13:05:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 151 transitions. [2020-11-22 13:05:36,064 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 151 transitions. Word has length 17 [2020-11-22 13:05:36,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:36,065 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 151 transitions. [2020-11-22 13:05:36,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:36,065 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 151 transitions. [2020-11-22 13:05:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:05:36,067 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:36,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:36,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:36,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash 395131783, now seen corresponding path program 1 times [2020-11-22 13:05:36,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:36,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304397763] [2020-11-22 13:05:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:36,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304397763] [2020-11-22 13:05:36,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:36,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:36,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379459688] [2020-11-22 13:05:36,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:36,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:36,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:36,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:36,154 INFO L87 Difference]: Start difference. First operand 100 states and 151 transitions. Second operand 3 states. [2020-11-22 13:05:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:36,266 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2020-11-22 13:05:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:36,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-22 13:05:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:36,270 INFO L225 Difference]: With dead ends: 265 [2020-11-22 13:05:36,270 INFO L226 Difference]: Without dead ends: 171 [2020-11-22 13:05:36,271 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 [2020-11-22 13:05:36,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-22 13:05:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-11-22 13:05:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-11-22 13:05:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 243 transitions. [2020-11-22 13:05:36,304 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 243 transitions. Word has length 18 [2020-11-22 13:05:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:36,305 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 243 transitions. [2020-11-22 13:05:36,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 243 transitions. [2020-11-22 13:05:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 13:05:36,307 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:36,307 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] [2020-11-22 13:05:36,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:36,309 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1740743448, now seen corresponding path program 1 times [2020-11-22 13:05:36,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:36,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451903832] [2020-11-22 13:05:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:36,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451903832] [2020-11-22 13:05:36,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:36,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:36,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916235034] [2020-11-22 13:05:36,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:36,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:36,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:36,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:36,406 INFO L87 Difference]: Start difference. First operand 169 states and 243 transitions. Second operand 3 states. [2020-11-22 13:05:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:36,461 INFO L93 Difference]: Finished difference Result 301 states and 447 transitions. [2020-11-22 13:05:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:36,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-22 13:05:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:36,467 INFO L225 Difference]: With dead ends: 301 [2020-11-22 13:05:36,467 INFO L226 Difference]: Without dead ends: 212 [2020-11-22 13:05:36,468 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 [2020-11-22 13:05:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-11-22 13:05:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 188. [2020-11-22 13:05:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-22 13:05:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 273 transitions. [2020-11-22 13:05:36,494 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 273 transitions. Word has length 26 [2020-11-22 13:05:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:36,495 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 273 transitions. [2020-11-22 13:05:36,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 273 transitions. [2020-11-22 13:05:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-22 13:05:36,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:36,503 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] [2020-11-22 13:05:36,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:05:36,504 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:36,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:36,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1175087698, now seen corresponding path program 1 times [2020-11-22 13:05:36,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:36,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194711853] [2020-11-22 13:05:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:05:36,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194711853] [2020-11-22 13:05:36,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:36,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:36,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976334627] [2020-11-22 13:05:36,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:36,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:36,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:36,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:36,633 INFO L87 Difference]: Start difference. First operand 188 states and 273 transitions. Second operand 3 states. [2020-11-22 13:05:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:36,656 INFO L93 Difference]: Finished difference Result 435 states and 647 transitions. [2020-11-22 13:05:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:36,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-11-22 13:05:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:36,659 INFO L225 Difference]: With dead ends: 435 [2020-11-22 13:05:36,659 INFO L226 Difference]: Without dead ends: 327 [2020-11-22 13:05:36,661 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 [2020-11-22 13:05:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-11-22 13:05:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 323. [2020-11-22 13:05:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 13:05:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 477 transitions. [2020-11-22 13:05:36,685 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 477 transitions. Word has length 40 [2020-11-22 13:05:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:36,686 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 477 transitions. [2020-11-22 13:05:36,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:36,686 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 477 transitions. [2020-11-22 13:05:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-22 13:05:36,693 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:36,693 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] [2020-11-22 13:05:36,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:05:36,693 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:36,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1565358264, now seen corresponding path program 1 times [2020-11-22 13:05:36,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:36,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369270746] [2020-11-22 13:05:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:36,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369270746] [2020-11-22 13:05:36,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:36,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:36,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314112377] [2020-11-22 13:05:36,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:36,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:36,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:36,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:36,789 INFO L87 Difference]: Start difference. First operand 323 states and 477 transitions. Second operand 3 states. [2020-11-22 13:05:36,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:36,840 INFO L93 Difference]: Finished difference Result 499 states and 745 transitions. [2020-11-22 13:05:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:36,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-11-22 13:05:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:36,842 INFO L225 Difference]: With dead ends: 499 [2020-11-22 13:05:36,842 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:36,843 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 [2020-11-22 13:05:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:36,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:36,844 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-11-22 13:05:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:36,845 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:36,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:36,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:36,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:05:36,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:37,030 INFO L274 CegarLoopResult]: For program point L68-3(lines 68 77) no Hoare annotation was computed. [2020-11-22 13:05:37,031 INFO L274 CegarLoopResult]: For program point L68-5(lines 68 77) no Hoare annotation was computed. [2020-11-22 13:05:37,031 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:05:37,031 INFO L274 CegarLoopResult]: For program point L69(lines 69 74) no Hoare annotation was computed. [2020-11-22 13:05:37,031 INFO L274 CegarLoopResult]: For program point L69-1(lines 69 74) no Hoare annotation was computed. [2020-11-22 13:05:37,031 INFO L274 CegarLoopResult]: For program point L69-2(lines 69 74) no Hoare annotation was computed. [2020-11-22 13:05:37,031 INFO L270 CegarLoopResult]: At program point L502(lines 502 511) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,032 INFO L270 CegarLoopResult]: At program point L502-1(lines 502 511) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,032 INFO L274 CegarLoopResult]: For program point L141(lines 141 153) no Hoare annotation was computed. [2020-11-22 13:05:37,032 INFO L270 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)) [2020-11-22 13:05:37,032 INFO L270 CegarLoopResult]: At program point L108-1(lines 86 110) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,032 INFO L270 CegarLoopResult]: At program point L108-2(lines 86 110) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,032 INFO L274 CegarLoopResult]: For program point L407(lines 407 411) no Hoare annotation was computed. [2020-11-22 13:05:37,032 INFO L274 CegarLoopResult]: For program point L407-1(lines 402 442) no Hoare annotation was computed. [2020-11-22 13:05:37,032 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-22 13:05:37,033 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-11-22 13:05:37,033 INFO L274 CegarLoopResult]: For program point L144(lines 144 152) no Hoare annotation was computed. [2020-11-22 13:05:37,033 INFO L277 CegarLoopResult]: At program point L12-1(lines 190 244) the Hoare annotation is: true [2020-11-22 13:05:37,033 INFO L270 CegarLoopResult]: At program point L145(lines 140 184) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,033 INFO L270 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)) [2020-11-22 13:05:37,033 INFO L270 CegarLoopResult]: At program point L79-1(lines 57 81) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,033 INFO L270 CegarLoopResult]: At program point L79-2(lines 57 81) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,033 INFO L270 CegarLoopResult]: At program point L443(lines 396 448) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,034 INFO L274 CegarLoopResult]: For program point L147(lines 147 151) no Hoare annotation was computed. [2020-11-22 13:05:37,034 INFO L270 CegarLoopResult]: At program point L412(lines 402 442) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,034 INFO L274 CegarLoopResult]: For program point L515(lines 515 519) no Hoare annotation was computed. [2020-11-22 13:05:37,034 INFO L274 CegarLoopResult]: For program point L416(lines 416 423) no Hoare annotation was computed. [2020-11-22 13:05:37,034 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-22 13:05:37,034 INFO L270 CegarLoopResult]: At program point L483-1(lines 317 520) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,034 INFO L274 CegarLoopResult]: For program point L87(lines 87 96) no Hoare annotation was computed. [2020-11-22 13:05:37,034 INFO L274 CegarLoopResult]: For program point L87-2(lines 86 110) no Hoare annotation was computed. [2020-11-22 13:05:37,034 INFO L274 CegarLoopResult]: For program point L87-3(lines 87 96) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L87-5(lines 86 110) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L87-6(lines 87 96) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L87-8(lines 86 110) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L88(lines 88 93) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L88-1(lines 88 93) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L88-2(lines 88 93) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L270 CegarLoopResult]: At program point L156-1(lines 140 184) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L58(lines 58 67) no Hoare annotation was computed. [2020-11-22 13:05:37,035 INFO L274 CegarLoopResult]: For program point L58-2(lines 57 81) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L58-3(lines 58 67) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L58-5(lines 57 81) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L58-6(lines 58 67) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L58-8(lines 57 81) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L277 CegarLoopResult]: At program point L521(lines 468 526) the Hoare annotation is: true [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L191(lines 191 199) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L59-1(lines 59 64) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L226(lines 226 238) no Hoare annotation was computed. [2020-11-22 13:05:37,036 INFO L274 CegarLoopResult]: For program point L227(lines 227 233) no Hoare annotation was computed. [2020-11-22 13:05:37,037 INFO L270 CegarLoopResult]: At program point L194(lines 194 198) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,037 INFO L270 CegarLoopResult]: At program point L427(lines 402 442) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,037 INFO L270 CegarLoopResult]: At program point L163(lines 140 184) the Hoare annotation is: (or (<= ~c_dr_pc~0 0) (= ~c_dr_pc~0 1)) [2020-11-22 13:05:37,037 INFO L274 CegarLoopResult]: For program point L97-1(lines 97 106) no Hoare annotation was computed. [2020-11-22 13:05:37,037 INFO L274 CegarLoopResult]: For program point L97-3(lines 97 106) no Hoare annotation was computed. [2020-11-22 13:05:37,037 INFO L274 CegarLoopResult]: For program point L97-5(lines 97 106) no Hoare annotation was computed. [2020-11-22 13:05:37,037 INFO L274 CegarLoopResult]: For program point L98(lines 98 103) no Hoare annotation was computed. [2020-11-22 13:05:37,037 INFO L274 CegarLoopResult]: For program point L98-1(lines 98 103) no Hoare annotation was computed. [2020-11-22 13:05:37,037 INFO L274 CegarLoopResult]: For program point L98-2(lines 98 103) no Hoare annotation was computed. [2020-11-22 13:05:37,038 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:05:37,038 INFO L274 CegarLoopResult]: For program point L431(lines 431 438) no Hoare annotation was computed. [2020-11-22 13:05:37,038 INFO L274 CegarLoopResult]: For program point L68-1(lines 68 77) no Hoare annotation was computed. [2020-11-22 13:05:37,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:37 BoogieIcfgContainer [2020-11-22 13:05:37,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:37,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:37,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:37,067 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:37,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:35" (3/4) ... [2020-11-22 13:05:37,070 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:37,099 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 59 nodes and edges [2020-11-22 13:05:37,101 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 13:05:37,102 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 13:05:37,103 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:37,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3b2d4fd0-2f87-4f54-af64-1f6fc8b2b1d3/bin/utaipan/witness.graphml [2020-11-22 13:05:37,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:37,225 INFO L168 Benchmark]: Toolchain (without parser) took 3732.35 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 66.2 MB in the beginning and 69.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:37,225 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:37,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.89 ms. Allocated memory is still 96.5 MB. Free memory was 66.0 MB in the beginning and 70.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:37,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.92 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 68.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:37,226 INFO L168 Benchmark]: Boogie Preprocessor took 38.24 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 66.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:37,227 INFO L168 Benchmark]: RCFGBuilder took 1511.45 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 66.2 MB in the beginning and 78.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:37,227 INFO L168 Benchmark]: TraceAbstraction took 1569.97 ms. Allocated memory is still 136.3 MB. Free memory was 78.1 MB in the beginning and 77.4 MB in the end (delta: 758.4 kB). Peak memory consumption was 758.4 kB. Max. memory is 16.1 GB. [2020-11-22 13:05:37,228 INFO L168 Benchmark]: Witness Printer took 156.46 ms. Allocated memory is still 136.3 MB. Free memory was 76.3 MB in the beginning and 69.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:37,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 75.5 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.89 ms. Allocated memory is still 96.5 MB. Free memory was 66.0 MB in the beginning and 70.8 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 52.92 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 68.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.24 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 66.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1511.45 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 66.2 MB in the beginning and 78.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1569.97 ms. Allocated memory is still 136.3 MB. Free memory was 78.1 MB in the beginning and 77.4 MB in the end (delta: 758.4 kB). Peak memory consumption was 758.4 kB. Max. memory is 16.1 GB. * Witness Printer took 156.46 ms. Allocated memory is still 136.3 MB. Free memory was 76.3 MB in the beginning and 69.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() 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: 1.2s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s 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...