./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_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_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/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 35302c44aa592878ed3aa1d29e61c739b3558b68 ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:21:32,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:21:32,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:21:32,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:21:32,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:21:32,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:21:32,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:21:32,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:21:32,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:21:32,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:21:32,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:21:32,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:21:32,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:21:32,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:21:32,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:21:32,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:21:32,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:21:32,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:21:32,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:21:32,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:21:32,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:21:32,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:21:32,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:21:32,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:21:32,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:21:32,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:21:32,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:21:32,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:21:32,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:21:32,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:21:32,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:21:32,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:21:32,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:21:32,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:21:32,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:21:33,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:21:33,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:21:33,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:21:33,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:21:33,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:21:33,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:21:33,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:21:33,012 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:21:33,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:21:33,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:21:33,013 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:21:33,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:21:33,013 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:21:33,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:21:33,013 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:21:33,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:21:33,013 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:21:33,014 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:21:33,014 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:21:33,014 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:21:33,014 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:21:33,014 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:21:33,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:21:33,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:21:33,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:21:33,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:21:33,016 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:21:33,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:21:33,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:21:33,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:21:33,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:21:33,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:21:33,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:21:33,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:21:33,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:21:33,017 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:21:33,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:21:33,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:21:33,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:21:33,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:21:33,017 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_162b7b58-b11d-4ddd-9087-94a099bc3d2c/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 -> 35302c44aa592878ed3aa1d29e61c739b3558b68 [2019-12-07 20:21:33,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:21:33,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:21:33,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:21:33,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:21:33,127 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:21:33,127 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe023_tso.oepc.i [2019-12-07 20:21:33,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/data/36d7e166f/49060483aac94abab6744e0fc14d1f86/FLAGc938b92d9 [2019-12-07 20:21:33,609 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:21:33,610 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/sv-benchmarks/c/pthread-wmm/safe023_tso.oepc.i [2019-12-07 20:21:33,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/data/36d7e166f/49060483aac94abab6744e0fc14d1f86/FLAGc938b92d9 [2019-12-07 20:21:33,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/data/36d7e166f/49060483aac94abab6744e0fc14d1f86 [2019-12-07 20:21:33,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:21:33,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:21:33,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:21:33,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:21:33,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:21:33,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:21:33" (1/1) ... [2019-12-07 20:21:33,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e86be24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:33, skipping insertion in model container [2019-12-07 20:21:33,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:21:33" (1/1) ... [2019-12-07 20:21:33,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:21:33,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:21:33,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:21:33,926 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:21:33,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:21:34,001 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:21:34,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34 WrapperNode [2019-12-07 20:21:34,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:21:34,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:21:34,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:21:34,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:21:34,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:21:34,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:21:34,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:21:34,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:21:34,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... [2019-12-07 20:21:34,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:21:34,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:21:34,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:21:34,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:21:34,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/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 20:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 20:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 20:21:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 20:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 20:21:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 20:21:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 20:21:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 20:21:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 20:21:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:21:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:21:34,096 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 20:21:34,270 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:21:34,270 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 20:21:34,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:21:34 BoogieIcfgContainer [2019-12-07 20:21:34,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:21:34,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:21:34,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:21:34,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:21:34,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:21:33" (1/3) ... [2019-12-07 20:21:34,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41662a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:21:34, skipping insertion in model container [2019-12-07 20:21:34,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:21:34" (2/3) ... [2019-12-07 20:21:34,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41662a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:21:34, skipping insertion in model container [2019-12-07 20:21:34,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:21:34" (3/3) ... [2019-12-07 20:21:34,275 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2019-12-07 20:21:34,281 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 20:21:34,282 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:21:34,285 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:21:34,286 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 20:21:34,303 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,303 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,303 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,303 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,303 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,303 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,304 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,305 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,305 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,305 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,305 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:21:34,319 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 20:21:34,331 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:21:34,331 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:21:34,331 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:21:34,331 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:21:34,332 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:21:34,332 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:21:34,332 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:21:34,332 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:21:34,340 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 20:21:34,341 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 20:21:34,368 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 20:21:34,368 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:21:34,373 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 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:21:34,375 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 20:21:34,384 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 20:21:34,384 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:21:34,385 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 24 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:21:34,387 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 20:21:34,388 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 20:21:35,134 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-07 20:21:35,134 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-07 20:21:35,136 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 20:21:35,143 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 20:21:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 20:21:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:21:35,149 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:21:35,149 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:21:35,150 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:21:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:21:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-07 20:21:35,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:21:35,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135199821] [2019-12-07 20:21:35,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:21:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:21:35,335 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 20:21:35,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135199821] [2019-12-07 20:21:35,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:21:35,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:21:35,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265765893] [2019-12-07 20:21:35,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:21:35,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:21:35,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:21:35,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:21:35,350 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2019-12-07 20:21:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:21:35,394 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2019-12-07 20:21:35,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:21:35,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 20:21:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:21:35,403 INFO L225 Difference]: With dead ends: 51 [2019-12-07 20:21:35,403 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 20:21:35,404 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 20:21:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 20:21:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 20:21:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 20:21:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 20:21:35,427 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 20:21:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:21:35,428 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 20:21:35,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:21:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 20:21:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:21:35,428 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:21:35,428 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:21:35,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:21:35,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:21:35,429 INFO L82 PathProgramCache]: Analyzing trace with hash -816919897, now seen corresponding path program 1 times [2019-12-07 20:21:35,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:21:35,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590960839] [2019-12-07 20:21:35,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:21:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:21:35,491 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 20:21:35,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590960839] [2019-12-07 20:21:35,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:21:35,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:21:35,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245282582] [2019-12-07 20:21:35,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:21:35,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:21:35,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:21:35,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:21:35,493 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 20:21:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:21:35,504 INFO L93 Difference]: Finished difference Result 36 states and 59 transitions. [2019-12-07 20:21:35,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:21:35,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 20:21:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:21:35,510 INFO L225 Difference]: With dead ends: 36 [2019-12-07 20:21:35,510 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 20:21:35,511 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 20:21:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 20:21:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-12-07 20:21:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 20:21:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2019-12-07 20:21:35,513 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 9 [2019-12-07 20:21:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:21:35,513 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-12-07 20:21:35,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:21:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-07 20:21:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:21:35,514 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:21:35,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:21:35,514 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:21:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:21:35,515 INFO L82 PathProgramCache]: Analyzing trace with hash 474054071, now seen corresponding path program 1 times [2019-12-07 20:21:35,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:21:35,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485454307] [2019-12-07 20:21:35,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:21:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:21:35,575 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 20:21:35,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485454307] [2019-12-07 20:21:35,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:21:35,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 20:21:35,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110058315] [2019-12-07 20:21:35,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 20:21:35,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:21:35,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 20:21:35,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:21:35,576 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. Second operand 6 states. [2019-12-07 20:21:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:21:35,614 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2019-12-07 20:21:35,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 20:21:35,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 20:21:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:21:35,615 INFO L225 Difference]: With dead ends: 23 [2019-12-07 20:21:35,615 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 20:21:35,615 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 20:21:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 20:21:35,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 20:21:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 20:21:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-07 20:21:35,617 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-07 20:21:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:21:35,617 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 20:21:35,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 20:21:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-07 20:21:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:21:35,618 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:21:35,618 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:21:35,618 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:21:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:21:35,618 INFO L82 PathProgramCache]: Analyzing trace with hash 921846531, now seen corresponding path program 1 times [2019-12-07 20:21:35,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:21:35,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655675150] [2019-12-07 20:21:35,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:21:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:21:35,680 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 20:21:35,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655675150] [2019-12-07 20:21:35,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:21:35,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:21:35,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070711587] [2019-12-07 20:21:35,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:21:35,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:21:35,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:21:35,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:21:35,681 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-12-07 20:21:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:21:35,690 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-07 20:21:35,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:21:35,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 20:21:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:21:35,690 INFO L225 Difference]: With dead ends: 16 [2019-12-07 20:21:35,690 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:21:35,690 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 20:21:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:21:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:21:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:21:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:21:35,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 20:21:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:21:35,691 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:21:35,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:21:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:21:35,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:21:35,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:21:35 BasicIcfg [2019-12-07 20:21:35,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:21:35,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:21:35,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:21:35,694 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:21:35,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:21:34" (3/4) ... [2019-12-07 20:21:35,697 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:21:35,701 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 20:21:35,701 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 20:21:35,701 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 20:21:35,704 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 20:21:35,704 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 20:21:35,704 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:21:35,738 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_162b7b58-b11d-4ddd-9087-94a099bc3d2c/bin/utaipan/witness.graphml [2019-12-07 20:21:35,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:21:35,740 INFO L168 Benchmark]: Toolchain (without parser) took 2108.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -134.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:21:35,740 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:21:35,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -152.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:21:35,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.07 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 20:21:35,741 INFO L168 Benchmark]: Boogie Preprocessor took 17.53 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 20:21:35,742 INFO L168 Benchmark]: RCFGBuilder took 219.92 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 20:21:35,742 INFO L168 Benchmark]: TraceAbstraction took 1422.02 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: -17.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:21:35,743 INFO L168 Benchmark]: Witness Printer took 44.18 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:21:35,745 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 370.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -152.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.07 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 17.53 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 219.92 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 1422.02 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: -17.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 44.18 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: 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: 0.7s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 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: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 46 SDslu, 21 SDs, 0 SdLazy, 33 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1850 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...