./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.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_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/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 6e5d4029f581c462fcc1266ae50a944afe6a64c5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:56:19,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:56:19,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:56:19,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:56:19,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:56:19,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:56:19,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:56:19,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:56:19,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:56:19,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:56:20,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:56:20,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:56:20,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:56:20,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:56:20,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:56:20,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:56:20,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:56:20,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:56:20,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:56:20,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:56:20,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:56:20,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:56:20,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:56:20,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:56:20,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:56:20,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:56:20,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:56:20,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:56:20,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:56:20,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:56:20,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:56:20,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:56:20,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:56:20,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:56:20,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:56:20,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:56:20,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:56:20,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:56:20,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:56:20,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:56:20,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:56:20,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:56:20,032 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:56:20,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:56:20,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:56:20,033 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:56:20,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:56:20,034 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:56:20,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:56:20,034 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:56:20,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:56:20,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:56:20,035 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:56:20,035 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:56:20,035 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:56:20,035 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:56:20,035 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:56:20,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:56:20,036 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:56:20,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:56:20,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:56:20,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:56:20,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:56:20,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:56:20,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:56:20,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:56:20,037 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:56:20,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:56:20,038 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:56:20,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:56:20,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:56:20,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:56:20,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:56:20,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:56:20,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:56:20,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:56:20,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:56:20,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:56:20,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:56:20,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:56:20,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:56:20,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:56:20,040 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_c32ac8eb-7e90-49cc-8469-73285f528ac4/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 -> 6e5d4029f581c462fcc1266ae50a944afe6a64c5 [2019-12-07 15:56:20,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:56:20,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:56:20,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:56:20,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:56:20,156 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:56:20,156 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2019-12-07 15:56:20,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/data/5a3b1d79c/fdb4cd331acd43489ff3b5cf155710a1/FLAG7d0ea8f61 [2019-12-07 15:56:20,633 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:56:20,634 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2019-12-07 15:56:20,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/data/5a3b1d79c/fdb4cd331acd43489ff3b5cf155710a1/FLAG7d0ea8f61 [2019-12-07 15:56:20,652 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/data/5a3b1d79c/fdb4cd331acd43489ff3b5cf155710a1 [2019-12-07 15:56:20,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:56:20,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:56:20,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:56:20,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:56:20,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:56:20,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:56:20" (1/1) ... [2019-12-07 15:56:20,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c40132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:20, skipping insertion in model container [2019-12-07 15:56:20,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:56:20" (1/1) ... [2019-12-07 15:56:20,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:56:20,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:56:20,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:56:20,944 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:56:20,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:56:21,027 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:56:21,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21 WrapperNode [2019-12-07 15:56:21,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:56:21,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:56:21,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:56:21,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:56:21,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:56:21,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:56:21,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:56:21,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:56:21,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... [2019-12-07 15:56:21,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:56:21,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:56:21,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:56:21,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:56:21,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/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 15:56:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:56:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 15:56:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:56:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:56:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 15:56:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 15:56:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 15:56:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 15:56:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 15:56:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 15:56:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 15:56:21,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 15:56:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 15:56:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:56:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:56:21,124 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 15:56:21,311 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:56:21,311 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 15:56:21,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:56:21 BoogieIcfgContainer [2019-12-07 15:56:21,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:56:21,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:56:21,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:56:21,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:56:21,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:56:20" (1/3) ... [2019-12-07 15:56:21,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19faf789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:56:21, skipping insertion in model container [2019-12-07 15:56:21,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:21" (2/3) ... [2019-12-07 15:56:21,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19faf789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:56:21, skipping insertion in model container [2019-12-07 15:56:21,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:56:21" (3/3) ... [2019-12-07 15:56:21,319 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2019-12-07 15:56:21,325 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 15:56:21,325 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:56:21,329 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:56:21,330 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 15:56:21,349 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,349 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,349 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,349 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,350 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,350 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,350 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,350 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,350 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,351 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,351 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,351 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,352 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,352 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,352 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,352 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,352 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,352 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 15:56:21,372 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 15:56:21,387 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:56:21,387 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:56:21,387 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:56:21,387 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:56:21,387 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:56:21,387 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:56:21,388 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:56:21,388 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:56:21,397 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 67 transitions [2019-12-07 15:56:21,398 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions [2019-12-07 15:56:21,432 INFO L134 PetriNetUnfolder]: 1/63 cut-off events. [2019-12-07 15:56:21,432 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 15:56:21,438 INFO L76 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs. 12/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 15:56:21,441 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions [2019-12-07 15:56:21,456 INFO L134 PetriNetUnfolder]: 1/63 cut-off events. [2019-12-07 15:56:21,456 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 15:56:21,457 INFO L76 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs. 12/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 15:56:21,459 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 15:56:21,460 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 15:56:22,341 INFO L206 etLargeBlockEncoding]: Checked pairs total: 723 [2019-12-07 15:56:22,341 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-07 15:56:22,345 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions [2019-12-07 15:56:22,361 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 110 states. [2019-12-07 15:56:22,363 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2019-12-07 15:56:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:56:22,370 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:22,370 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:22,371 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:22,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1014881653, now seen corresponding path program 1 times [2019-12-07 15:56:22,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:22,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672958648] [2019-12-07 15:56:22,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:22,562 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 15:56:22,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672958648] [2019-12-07 15:56:22,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:22,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:56:22,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105346961] [2019-12-07 15:56:22,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:56:22,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:22,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:56:22,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:56:22,577 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2019-12-07 15:56:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:22,598 INFO L93 Difference]: Finished difference Result 102 states and 260 transitions. [2019-12-07 15:56:22,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:56:22,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 15:56:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:22,607 INFO L225 Difference]: With dead ends: 102 [2019-12-07 15:56:22,607 INFO L226 Difference]: Without dead ends: 70 [2019-12-07 15:56:22,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:56:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-12-07 15:56:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-12-07 15:56:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-12-07 15:56:22,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 164 transitions. [2019-12-07 15:56:22,635 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 164 transitions. Word has length 10 [2019-12-07 15:56:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:22,636 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 164 transitions. [2019-12-07 15:56:22,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:56:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 164 transitions. [2019-12-07 15:56:22,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:56:22,637 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:22,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:22,637 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1396559942, now seen corresponding path program 1 times [2019-12-07 15:56:22,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:22,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641080080] [2019-12-07 15:56:22,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:22,681 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 15:56:22,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641080080] [2019-12-07 15:56:22,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:22,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:56:22,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631322151] [2019-12-07 15:56:22,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:56:22,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:22,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:56:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:56:22,683 INFO L87 Difference]: Start difference. First operand 70 states and 164 transitions. Second operand 3 states. [2019-12-07 15:56:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:22,688 INFO L93 Difference]: Finished difference Result 66 states and 152 transitions. [2019-12-07 15:56:22,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:56:22,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 15:56:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:22,690 INFO L225 Difference]: With dead ends: 66 [2019-12-07 15:56:22,690 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 15:56:22,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:56:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 15:56:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-12-07 15:56:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 15:56:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 152 transitions. [2019-12-07 15:56:22,696 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 152 transitions. Word has length 11 [2019-12-07 15:56:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:22,697 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 152 transitions. [2019-12-07 15:56:22,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:56:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 152 transitions. [2019-12-07 15:56:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 15:56:22,697 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:22,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:22,698 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:22,698 INFO L82 PathProgramCache]: Analyzing trace with hash 343681169, now seen corresponding path program 1 times [2019-12-07 15:56:22,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:22,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703943114] [2019-12-07 15:56:22,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:22,758 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 15:56:22,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703943114] [2019-12-07 15:56:22,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:22,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:56:22,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831281940] [2019-12-07 15:56:22,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:56:22,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:22,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:56:22,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:56:22,760 INFO L87 Difference]: Start difference. First operand 66 states and 152 transitions. Second operand 5 states. [2019-12-07 15:56:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:22,783 INFO L93 Difference]: Finished difference Result 72 states and 159 transitions. [2019-12-07 15:56:22,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:56:22,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-07 15:56:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:22,784 INFO L225 Difference]: With dead ends: 72 [2019-12-07 15:56:22,784 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 15:56:22,785 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 15:56:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 15:56:22,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 15:56:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 15:56:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 119 transitions. [2019-12-07 15:56:22,789 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 119 transitions. Word has length 12 [2019-12-07 15:56:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:22,789 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 119 transitions. [2019-12-07 15:56:22,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:56:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2019-12-07 15:56:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 15:56:22,790 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:22,790 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:22,790 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1159720466, now seen corresponding path program 1 times [2019-12-07 15:56:22,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:22,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060947947] [2019-12-07 15:56:22,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:22,834 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 15:56:22,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060947947] [2019-12-07 15:56:22,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:22,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:56:22,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981920994] [2019-12-07 15:56:22,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:56:22,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:22,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:56:22,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:56:22,835 INFO L87 Difference]: Start difference. First operand 56 states and 119 transitions. Second operand 4 states. [2019-12-07 15:56:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:22,844 INFO L93 Difference]: Finished difference Result 55 states and 117 transitions. [2019-12-07 15:56:22,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:56:22,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 15:56:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:22,845 INFO L225 Difference]: With dead ends: 55 [2019-12-07 15:56:22,845 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 15:56:22,845 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 15:56:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 15:56:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-12-07 15:56:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-12-07 15:56:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 117 transitions. [2019-12-07 15:56:22,849 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 117 transitions. Word has length 13 [2019-12-07 15:56:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:22,849 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 117 transitions. [2019-12-07 15:56:22,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:56:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 117 transitions. [2019-12-07 15:56:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:56:22,850 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:22,850 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:22,850 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:22,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1591594888, now seen corresponding path program 1 times [2019-12-07 15:56:22,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:22,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328065034] [2019-12-07 15:56:22,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:22,905 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 15:56:22,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328065034] [2019-12-07 15:56:22,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:22,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:56:22,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249429913] [2019-12-07 15:56:22,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:56:22,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:22,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:56:22,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:56:22,907 INFO L87 Difference]: Start difference. First operand 55 states and 117 transitions. Second operand 5 states. [2019-12-07 15:56:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:22,922 INFO L93 Difference]: Finished difference Result 67 states and 135 transitions. [2019-12-07 15:56:22,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:56:22,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 15:56:22,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:22,923 INFO L225 Difference]: With dead ends: 67 [2019-12-07 15:56:22,923 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 15:56:22,923 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 15:56:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 15:56:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-12-07 15:56:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 15:56:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 79 transitions. [2019-12-07 15:56:22,926 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 79 transitions. Word has length 14 [2019-12-07 15:56:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:22,926 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 79 transitions. [2019-12-07 15:56:22,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:56:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 79 transitions. [2019-12-07 15:56:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:56:22,927 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:22,927 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:22,927 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:22,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:22,927 INFO L82 PathProgramCache]: Analyzing trace with hash -432128726, now seen corresponding path program 2 times [2019-12-07 15:56:22,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:22,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212353502] [2019-12-07 15:56:22,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:22,968 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 15:56:22,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212353502] [2019-12-07 15:56:22,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:22,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:56:22,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422330855] [2019-12-07 15:56:22,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:56:22,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:56:22,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:56:22,969 INFO L87 Difference]: Start difference. First operand 43 states and 79 transitions. Second operand 5 states. [2019-12-07 15:56:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:22,982 INFO L93 Difference]: Finished difference Result 45 states and 80 transitions. [2019-12-07 15:56:22,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:56:22,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 15:56:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:22,983 INFO L225 Difference]: With dead ends: 45 [2019-12-07 15:56:22,983 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:56:22,983 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 15:56:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:56:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 15:56:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:56:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-12-07 15:56:22,985 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 14 [2019-12-07 15:56:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:22,985 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-12-07 15:56:22,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:56:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-12-07 15:56:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:56:22,985 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:22,985 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:22,985 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:22,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:22,986 INFO L82 PathProgramCache]: Analyzing trace with hash -431612576, now seen corresponding path program 3 times [2019-12-07 15:56:22,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:22,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270852409] [2019-12-07 15:56:22,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:23,025 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 15:56:23,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270852409] [2019-12-07 15:56:23,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:23,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:56:23,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271712424] [2019-12-07 15:56:23,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:56:23,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:23,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:56:23,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:56:23,026 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand 5 states. [2019-12-07 15:56:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:23,035 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2019-12-07 15:56:23,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:56:23,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 15:56:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:23,036 INFO L225 Difference]: With dead ends: 24 [2019-12-07 15:56:23,036 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:56:23,036 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 15:56:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:56:23,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:56:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:56:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:56:23,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 15:56:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:23,036 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:56:23,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:56:23,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:56:23,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:56:23,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:56:23 BasicIcfg [2019-12-07 15:56:23,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:56:23,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:56:23,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:56:23,040 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:56:23,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:56:21" (3/4) ... [2019-12-07 15:56:23,042 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:56:23,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 15:56:23,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 15:56:23,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 15:56:23,047 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 15:56:23,050 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 15:56:23,050 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:56:23,050 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:56:23,079 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c32ac8eb-7e90-49cc-8469-73285f528ac4/bin/utaipan/witness.graphml [2019-12-07 15:56:23,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:56:23,081 INFO L168 Benchmark]: Toolchain (without parser) took 2425.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 934.0 MB in the beginning and 997.1 MB in the end (delta: -63.1 MB). Peak memory consumption was 46.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:23,081 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:56:23,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.99 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 980.3 MB in the end (delta: -46.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:23,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.32 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:56:23,082 INFO L168 Benchmark]: Boogie Preprocessor took 19.13 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:56:23,082 INFO L168 Benchmark]: RCFGBuilder took 231.56 ms. Allocated memory is still 1.0 GB. Free memory was 980.3 MB in the beginning and 951.2 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:23,082 INFO L168 Benchmark]: TraceAbstraction took 1725.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.2 MB in the beginning and 999.8 MB in the end (delta: -48.6 MB). Peak memory consumption was 60.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:23,083 INFO L168 Benchmark]: Witness Printer took 39.86 ms. Allocated memory is still 1.1 GB. Free memory was 999.8 MB in the beginning and 997.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:56:23,084 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 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.99 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 980.3 MB in the end (delta: -46.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.32 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.13 ms. Allocated memory is still 1.0 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 231.56 ms. Allocated memory is still 1.0 GB. Free memory was 980.3 MB in the beginning and 951.2 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1725.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.2 MB in the beginning and 999.8 MB in the end (delta: -48.6 MB). Peak memory consumption was 60.9 MB. Max. memory is 11.5 GB. * Witness Printer took 39.86 ms. Allocated memory is still 1.1 GB. Free memory was 999.8 MB in the beginning and 997.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 79 ProgramPointsBefore, 28 ProgramPointsAfterwards, 67 TransitionsBefore, 21 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 358 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 723 CheckedPairsTotal, 56 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 5 procedures, 67 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 100 SDslu, 58 SDs, 0 SdLazy, 38 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 3727 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...