./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe007_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_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/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 b4eb334bb070f2a293fc01aef76dc464852d0e6d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:53:01,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:53:01,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:53:01,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:53:01,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:53:01,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:53:01,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:53:01,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:53:01,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:53:01,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:53:01,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:53:01,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:53:01,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:53:01,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:53:01,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:53:01,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:53:01,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:53:01,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:53:01,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:53:01,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:53:01,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:53:01,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:53:01,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:53:01,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:53:01,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:53:01,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:53:01,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:53:01,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:53:01,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:53:01,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:53:01,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:53:01,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:53:01,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:53:01,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:53:01,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:53:01,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:53:01,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:53:01,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:53:01,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:53:01,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:53:01,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:53:01,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:53:01,132 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:53:01,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:53:01,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:53:01,133 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:53:01,134 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:53:01,134 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:53:01,134 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:53:01,134 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:53:01,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:53:01,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:53:01,135 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:53:01,135 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:53:01,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:53:01,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:53:01,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:53:01,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:53:01,136 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:53:01,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:53:01,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:53:01,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:53:01,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:53:01,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:53:01,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:53:01,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:53:01,138 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:53:01,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:53:01,138 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:53:01,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:53:01,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:53:01,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:53:01,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:53:01,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:53:01,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:53:01,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:53:01,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:53:01,139 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:53:01,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:53:01,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:53:01,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:53:01,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:53:01,140 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_7f8f342e-6fd3-4166-8016-5c6a97d330be/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 -> b4eb334bb070f2a293fc01aef76dc464852d0e6d [2019-12-07 15:53:01,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:53:01,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:53:01,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:53:01,248 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:53:01,249 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:53:01,249 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i [2019-12-07 15:53:01,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/data/1189a6871/cbcaac5bbbcf4bf397a02945ec42beb5/FLAG4d801af70 [2019-12-07 15:53:01,774 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:53:01,774 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/sv-benchmarks/c/pthread-wmm/safe007_tso.oepc.i [2019-12-07 15:53:01,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/data/1189a6871/cbcaac5bbbcf4bf397a02945ec42beb5/FLAG4d801af70 [2019-12-07 15:53:01,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/data/1189a6871/cbcaac5bbbcf4bf397a02945ec42beb5 [2019-12-07 15:53:01,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:53:01,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:53:01,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:53:01,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:53:01,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:53:01,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:53:01" (1/1) ... [2019-12-07 15:53:01,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d02537e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:01, skipping insertion in model container [2019-12-07 15:53:01,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:53:01" (1/1) ... [2019-12-07 15:53:01,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:53:01,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:53:02,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:53:02,077 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:53:02,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:53:02,151 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:53:02,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02 WrapperNode [2019-12-07 15:53:02,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:53:02,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:53:02,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:53:02,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:53:02,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:53:02,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:53:02,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:53:02,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:53:02,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... [2019-12-07 15:53:02,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:53:02,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:53:02,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:53:02,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:53:02,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/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 15:53:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:53:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 15:53:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:53:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:53:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 15:53:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 15:53:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 15:53:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 15:53:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 15:53:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 15:53:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 15:53:02,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:53:02,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:53:02,243 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 15:53:02,418 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:53:02,418 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 15:53:02,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:53:02 BoogieIcfgContainer [2019-12-07 15:53:02,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:53:02,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:53:02,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:53:02,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:53:02,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:53:01" (1/3) ... [2019-12-07 15:53:02,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a434b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:53:02, skipping insertion in model container [2019-12-07 15:53:02,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:53:02" (2/3) ... [2019-12-07 15:53:02,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a434b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:53:02, skipping insertion in model container [2019-12-07 15:53:02,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:53:02" (3/3) ... [2019-12-07 15:53:02,424 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2019-12-07 15:53:02,430 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 15:53:02,430 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:53:02,434 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:53:02,435 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 15:53:02,452 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,452 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,452 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,452 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,452 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,452 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,453 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,453 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,453 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,453 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,453 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,453 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,454 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,454 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,454 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,454 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,454 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,454 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:53:02,468 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 15:53:02,480 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:53:02,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:53:02,480 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:53:02,480 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:53:02,480 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:53:02,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:53:02,481 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:53:02,481 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:53:02,489 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-07 15:53:02,490 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 15:53:02,516 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 15:53:02,516 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 15:53:02,520 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 15:53:02,522 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 15:53:02,531 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 15:53:02,531 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 15:53:02,532 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 15:53:02,533 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 15:53:02,534 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 15:53:03,325 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-07 15:53:03,326 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 15:53:03,328 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 15:53:03,335 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 15:53:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 15:53:03,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:53:03,341 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:53:03,341 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:53:03,342 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:53:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:53:03,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2019279745, now seen corresponding path program 1 times [2019-12-07 15:53:03,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:53:03,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290457814] [2019-12-07 15:53:03,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:53:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:53:03,524 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 15:53:03,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290457814] [2019-12-07 15:53:03,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:53:03,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:53:03,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896645903] [2019-12-07 15:53:03,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:53:03,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:53:03,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:53:03,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:53:03,540 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2019-12-07 15:53:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:53:03,591 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2019-12-07 15:53:03,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:53:03,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 15:53:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:53:03,603 INFO L225 Difference]: With dead ends: 51 [2019-12-07 15:53:03,603 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 15:53:03,604 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 15:53:03,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 15:53:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 15:53:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 15:53:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 15:53:03,629 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 15:53:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:53:03,629 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 15:53:03,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:53:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 15:53:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:53:03,630 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:53:03,630 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:53:03,630 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:53:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:53:03,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1392638966, now seen corresponding path program 1 times [2019-12-07 15:53:03,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:53:03,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064792647] [2019-12-07 15:53:03,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:53:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:53:03,705 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 15:53:03,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064792647] [2019-12-07 15:53:03,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:53:03,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:53:03,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123092297] [2019-12-07 15:53:03,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:53:03,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:53:03,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:53:03,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:53:03,708 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-07 15:53:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:53:03,742 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-07 15:53:03,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:53:03,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 15:53:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:53:03,743 INFO L225 Difference]: With dead ends: 37 [2019-12-07 15:53:03,743 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 15:53:03,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:53:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 15:53:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 15:53:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 15:53:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-07 15:53:03,749 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-07 15:53:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:53:03,749 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-07 15:53:03,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:53:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-07 15:53:03,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:53:03,750 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:53:03,750 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:53:03,750 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:53:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:53:03,750 INFO L82 PathProgramCache]: Analyzing trace with hash 222216556, now seen corresponding path program 1 times [2019-12-07 15:53:03,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:53:03,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594938169] [2019-12-07 15:53:03,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:53:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:53:03,812 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 15:53:03,812 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594938169] [2019-12-07 15:53:03,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:53:03,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:53:03,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212908420] [2019-12-07 15:53:03,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:53:03,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:53:03,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:53:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:53:03,813 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 6 states. [2019-12-07 15:53:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:53:03,854 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2019-12-07 15:53:03,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:53:03,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 15:53:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:53:03,855 INFO L225 Difference]: With dead ends: 28 [2019-12-07 15:53:03,855 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 15:53:03,855 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 15:53:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 15:53:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 15:53:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 15:53:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-07 15:53:03,858 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-07 15:53:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:53:03,858 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-07 15:53:03,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:53:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-07 15:53:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:53:03,859 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:53:03,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:53:03,859 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:53:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:53:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1701132098, now seen corresponding path program 1 times [2019-12-07 15:53:03,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:53:03,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070488974] [2019-12-07 15:53:03,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:53:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:53:03,909 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 15:53:03,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070488974] [2019-12-07 15:53:03,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:53:03,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:53:03,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973475727] [2019-12-07 15:53:03,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:53:03,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:53:03,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:53:03,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:53:03,911 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 5 states. [2019-12-07 15:53:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:53:03,925 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-07 15:53:03,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:53:03,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 15:53:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:53:03,926 INFO L225 Difference]: With dead ends: 27 [2019-12-07 15:53:03,926 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 15:53:03,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:53:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 15:53:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 15:53:03,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:53:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 15:53:03,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-07 15:53:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:53:03,928 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 15:53:03,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:53:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 15:53:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:53:03,928 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:53:03,929 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:53:03,929 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:53:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:53:03,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1131912426, now seen corresponding path program 2 times [2019-12-07 15:53:03,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:53:03,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507533639] [2019-12-07 15:53:03,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:53:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:53:03,975 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 15:53:03,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507533639] [2019-12-07 15:53:03,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:53:03,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:53:03,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723910178] [2019-12-07 15:53:03,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:53:03,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:53:03,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:53:03,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:53:03,976 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2019-12-07 15:53:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:53:03,990 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-07 15:53:03,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:53:03,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 15:53:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:53:03,991 INFO L225 Difference]: With dead ends: 19 [2019-12-07 15:53:03,991 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 15:53:03,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:53:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 15:53:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 15:53:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 15:53:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 15:53:03,993 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-07 15:53:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:53:03,994 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 15:53:03,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:53:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 15:53:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:53:03,994 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:53:03,994 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:53:03,995 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:53:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:53:03,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1139321736, now seen corresponding path program 3 times [2019-12-07 15:53:03,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:53:03,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650969147] [2019-12-07 15:53:03,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:53:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:53:04,045 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 15:53:04,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650969147] [2019-12-07 15:53:04,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:53:04,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:53:04,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806862782] [2019-12-07 15:53:04,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:53:04,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:53:04,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:53:04,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:53:04,047 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-12-07 15:53:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:53:04,055 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-07 15:53:04,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:53:04,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 15:53:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:53:04,056 INFO L225 Difference]: With dead ends: 13 [2019-12-07 15:53:04,056 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:53:04,056 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:53:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:53:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:53:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:53:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:53:04,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 15:53:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:53:04,057 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:53:04,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:53:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:53:04,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:53:04,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:53:04 BasicIcfg [2019-12-07 15:53:04,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:53:04,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:53:04,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:53:04,060 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:53:04,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:53:02" (3/4) ... [2019-12-07 15:53:04,062 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:53:04,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 15:53:04,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 15:53:04,067 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 15:53:04,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 15:53:04,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:53:04,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:53:04,099 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7f8f342e-6fd3-4166-8016-5c6a97d330be/bin/utaipan/witness.graphml [2019-12-07 15:53:04,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:53:04,101 INFO L168 Benchmark]: Toolchain (without parser) took 2303.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 939.8 MB in the beginning and 1.0 GB in the end (delta: -89.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:53:04,101 INFO L168 Benchmark]: CDTParser took 0.12 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 15:53:04,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -145.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:53:04,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.32 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 15:53:04,102 INFO L168 Benchmark]: Boogie Preprocessor took 17.71 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 15:53:04,102 INFO L168 Benchmark]: RCFGBuilder took 217.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:53:04,103 INFO L168 Benchmark]: TraceAbstraction took 1639.55 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:53:04,103 INFO L168 Benchmark]: Witness Printer took 39.73 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:53:04,105 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 354.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -145.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.32 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 17.71 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 217.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1639.55 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: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Witness Printer took 39.73 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 64 ProgramPointsBefore, 21 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 226 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 87 SDslu, 44 SDs, 0 SdLazy, 61 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 0 StatesRemovedByMinimization, 0 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, 2274 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...