./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b20f0362d47fb0eca5e2e50905980195c4017e92 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:32:13,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:32:13,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:32:13,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:32:13,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:32:13,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:32:13,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:32:13,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:32:13,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:32:13,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:32:13,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:32:13,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:32:13,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:32:13,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:32:13,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:32:13,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:32:13,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:32:13,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:32:13,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:32:13,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:32:13,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:32:13,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:32:13,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:32:13,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:32:13,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:32:13,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:32:13,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:32:13,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:32:13,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:32:13,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:32:13,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:32:13,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:32:13,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:32:13,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:32:13,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:32:13,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:32:13,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:32:13,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:32:13,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:32:13,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:32:13,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:32:13,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:32:13,290 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:32:13,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:32:13,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:32:13,291 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:32:13,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:32:13,291 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:32:13,291 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:32:13,292 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:32:13,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:32:13,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:32:13,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:32:13,292 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:32:13,292 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:32:13,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:32:13,292 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:32:13,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:32:13,293 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:32:13,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:32:13,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:32:13,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:32:13,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:32:13,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:32:13,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:32:13,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:32:13,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:32:13,296 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/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(__VERIFIER_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 -> b20f0362d47fb0eca5e2e50905980195c4017e92 [2019-12-07 19:32:13,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:32:13,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:32:13,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:32:13,405 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:32:13,405 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:32:13,405 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2019-12-07 19:32:13,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/data/1a2c28e1b/7448425b112f492cb0f3955eabeae5ea/FLAGd3e8e7cfa [2019-12-07 19:32:13,917 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:32:13,917 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2019-12-07 19:32:13,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/data/1a2c28e1b/7448425b112f492cb0f3955eabeae5ea/FLAGd3e8e7cfa [2019-12-07 19:32:14,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/data/1a2c28e1b/7448425b112f492cb0f3955eabeae5ea [2019-12-07 19:32:14,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:32:14,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:32:14,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:14,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:32:14,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:32:14,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7066884f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14, skipping insertion in model container [2019-12-07 19:32:14,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:32:14,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:32:14,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:14,697 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:32:14,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:32:14,775 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:32:14,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14 WrapperNode [2019-12-07 19:32:14,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:32:14,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:32:14,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:32:14,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:32:14,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:32:14,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:32:14,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:32:14,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:32:14,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... [2019-12-07 19:32:14,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:32:14,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:32:14,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:32:14,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:32:14,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/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 [2019-12-07 19:32:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 19:32:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 19:32:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:32:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:32:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 19:32:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 19:32:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 19:32:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 19:32:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 19:32:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 19:32:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 19:32:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:32:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:32:14,876 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 19:32:15,052 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:32:15,052 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 19:32:15,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:15 BoogieIcfgContainer [2019-12-07 19:32:15,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:32:15,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:32:15,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:32:15,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:32:15,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:32:14" (1/3) ... [2019-12-07 19:32:15,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a4fe97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:32:15, skipping insertion in model container [2019-12-07 19:32:15,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:32:14" (2/3) ... [2019-12-07 19:32:15,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a4fe97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:32:15, skipping insertion in model container [2019-12-07 19:32:15,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:15" (3/3) ... [2019-12-07 19:32:15,057 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2019-12-07 19:32:15,063 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 19:32:15,063 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:32:15,068 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:32:15,068 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 19:32:15,085 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,085 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,085 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,086 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,086 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,086 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,086 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,086 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,087 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,087 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,087 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,087 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,087 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,088 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,088 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,088 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,088 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,088 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 19:32:15,103 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 19:32:15,115 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:32:15,115 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:32:15,115 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:32:15,115 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:32:15,115 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:32:15,116 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:32:15,116 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:32:15,116 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:32:15,124 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 19:32:15,125 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 19:32:15,150 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 19:32:15,151 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 19:32:15,155 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 19:32:15,157 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 19:32:15,167 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 19:32:15,167 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 19:32:15,167 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 19:32:15,169 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 19:32:15,169 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 19:32:15,919 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 19:32:16,035 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-07 19:32:16,035 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 19:32:16,037 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 19:32:16,045 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 19:32:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 19:32:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 19:32:16,050 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:16,051 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:16,051 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-07 19:32:16,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:16,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770911061] [2019-12-07 19:32:16,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:16,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770911061] [2019-12-07 19:32:16,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:16,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:32:16,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912086686] [2019-12-07 19:32:16,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:32:16,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:16,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:32:16,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:16,242 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 19:32:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:16,295 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 19:32:16,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:32:16,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 19:32:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:16,305 INFO L225 Difference]: With dead ends: 58 [2019-12-07 19:32:16,305 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 19:32:16,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:32:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 19:32:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 19:32:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 19:32:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 19:32:16,333 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 19:32:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:16,334 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 19:32:16,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:32:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 19:32:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 19:32:16,335 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:16,335 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:16,335 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:16,335 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-12-07 19:32:16,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:16,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826023306] [2019-12-07 19:32:16,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:16,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826023306] [2019-12-07 19:32:16,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:16,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:32:16,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477249748] [2019-12-07 19:32:16,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:32:16,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:16,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:32:16,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:16,405 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 19:32:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:16,421 INFO L93 Difference]: Finished difference Result 44 states and 71 transitions. [2019-12-07 19:32:16,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:32:16,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 19:32:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:16,422 INFO L225 Difference]: With dead ends: 44 [2019-12-07 19:32:16,422 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 19:32:16,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:16,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 19:32:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-12-07 19:32:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 19:32:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2019-12-07 19:32:16,427 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 9 [2019-12-07 19:32:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:16,427 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2019-12-07 19:32:16,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:32:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2019-12-07 19:32:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 19:32:16,428 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:16,428 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:16,428 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1542655070, now seen corresponding path program 1 times [2019-12-07 19:32:16,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:16,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118848322] [2019-12-07 19:32:16,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:16,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118848322] [2019-12-07 19:32:16,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:16,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:32:16,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328996025] [2019-12-07 19:32:16,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 19:32:16,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 19:32:16,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:32:16,486 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 6 states. [2019-12-07 19:32:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:16,527 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2019-12-07 19:32:16,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:32:16,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 19:32:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:16,528 INFO L225 Difference]: With dead ends: 37 [2019-12-07 19:32:16,528 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 19:32:16,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:32:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 19:32:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-12-07 19:32:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 19:32:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2019-12-07 19:32:16,531 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 10 [2019-12-07 19:32:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:16,531 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-12-07 19:32:16,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 19:32:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2019-12-07 19:32:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:32:16,531 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:16,531 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:16,532 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:16,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:16,532 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-07 19:32:16,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:16,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381534288] [2019-12-07 19:32:16,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:16,566 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381534288] [2019-12-07 19:32:16,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:16,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:32:16,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463935880] [2019-12-07 19:32:16,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:32:16,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:16,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:32:16,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:16,567 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand 4 states. [2019-12-07 19:32:16,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:16,580 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-12-07 19:32:16,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:32:16,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 19:32:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:16,580 INFO L225 Difference]: With dead ends: 28 [2019-12-07 19:32:16,581 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 19:32:16,581 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:32:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 19:32:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 19:32:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 19:32:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2019-12-07 19:32:16,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2019-12-07 19:32:16,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:16,583 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-07 19:32:16,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:32:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-12-07 19:32:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:32:16,584 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:16,584 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:16,584 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:16,584 INFO L82 PathProgramCache]: Analyzing trace with hash -577609367, now seen corresponding path program 2 times [2019-12-07 19:32:16,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:16,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621725738] [2019-12-07 19:32:16,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:16,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621725738] [2019-12-07 19:32:16,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:16,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:32:16,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930151809] [2019-12-07 19:32:16,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:32:16,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:16,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:32:16,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:32:16,635 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 5 states. [2019-12-07 19:32:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:16,656 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-12-07 19:32:16,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:32:16,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 19:32:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:16,657 INFO L225 Difference]: With dead ends: 23 [2019-12-07 19:32:16,657 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 19:32:16,657 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:32:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 19:32:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 19:32:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 19:32:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 19:32:16,659 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-07 19:32:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:16,659 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 19:32:16,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:32:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 19:32:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:32:16,659 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:32:16,659 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:32:16,659 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:32:16,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:32:16,659 INFO L82 PathProgramCache]: Analyzing trace with hash -577580537, now seen corresponding path program 3 times [2019-12-07 19:32:16,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:32:16,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186313517] [2019-12-07 19:32:16,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:32:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:32:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:32:16,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186313517] [2019-12-07 19:32:16,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:32:16,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:32:16,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841143880] [2019-12-07 19:32:16,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:32:16,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:32:16,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:32:16,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:32:16,698 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-07 19:32:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:32:16,713 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-07 19:32:16,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 19:32:16,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 19:32:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:32:16,713 INFO L225 Difference]: With dead ends: 13 [2019-12-07 19:32:16,713 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:32:16,714 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:32:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:32:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:32:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:32:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:32:16,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 19:32:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:32:16,714 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:32:16,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:32:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:32:16,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:32:16,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:32:16 BasicIcfg [2019-12-07 19:32:16,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:32:16,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:32:16,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:32:16,718 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:32:16,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:32:15" (3/4) ... [2019-12-07 19:32:16,720 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:32:16,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 19:32:16,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 19:32:16,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 19:32:16,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 19:32:16,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 19:32:16,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 19:32:16,763 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3cf9f9a2-fa1b-4ac4-8f5c-3ac5ba5d9048/bin/utaipan/witness.graphml [2019-12-07 19:32:16,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:32:16,765 INFO L168 Benchmark]: Toolchain (without parser) took 2337.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.8 MB in the beginning and 999.5 MB in the end (delta: -59.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:32:16,765 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:32:16,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -121.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:32:16,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:32:16,767 INFO L168 Benchmark]: Boogie Preprocessor took 18.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:32:16,767 INFO L168 Benchmark]: RCFGBuilder took 227.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:32:16,767 INFO L168 Benchmark]: TraceAbstraction took 1663.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2019-12-07 19:32:16,768 INFO L168 Benchmark]: Witness Printer took 46.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 999.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:32:16,770 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -121.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 227.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1663.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * Witness Printer took 46.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 999.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 63 SDslu, 54 SDs, 0 SdLazy, 68 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2570 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...