./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe006_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_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/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 cd2ddd9f30301219b403def434980700a7cf7ad6 .................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:09:58,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:09:58,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:09:58,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:09:58,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:09:58,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:09:58,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:09:58,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:09:58,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:09:58,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:09:58,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:09:58,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:09:58,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:09:58,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:09:58,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:09:58,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:09:58,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:09:58,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:09:58,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:09:58,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:09:58,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:09:58,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:09:58,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:09:58,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:09:58,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:09:58,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:09:58,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:09:58,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:09:58,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:09:58,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:09:58,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:09:58,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:09:58,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:09:58,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:09:58,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:09:58,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:09:58,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:09:58,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:09:58,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:09:58,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:09:58,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:09:58,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:09:58,821 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:09:58,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:09:58,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:09:58,822 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:09:58,822 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:09:58,822 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:09:58,822 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:09:58,822 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:09:58,823 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:09:58,823 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:09:58,823 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:09:58,823 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:09:58,823 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:09:58,823 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:09:58,824 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:09:58,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:09:58,824 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:09:58,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:09:58,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:09:58,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:09:58,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:09:58,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:09:58,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:09:58,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:09:58,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:09:58,827 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_18e65347-5e06-4b08-8764-8eb26525a779/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 -> cd2ddd9f30301219b403def434980700a7cf7ad6 [2019-12-07 14:09:58,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:09:58,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:09:58,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:09:58,947 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:09:58,948 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:09:58,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i [2019-12-07 14:09:58,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/data/c64785f21/06e757c994194801ac09f805b0a76adb/FLAG1856fa775 [2019-12-07 14:09:59,360 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:09:59,361 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i [2019-12-07 14:09:59,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/data/c64785f21/06e757c994194801ac09f805b0a76adb/FLAG1856fa775 [2019-12-07 14:09:59,380 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/data/c64785f21/06e757c994194801ac09f805b0a76adb [2019-12-07 14:09:59,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:09:59,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:09:59,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:09:59,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:09:59,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:09:59,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9c328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59, skipping insertion in model container [2019-12-07 14:09:59,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:09:59,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:09:59,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:09:59,665 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:09:59,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:09:59,743 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:09:59,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59 WrapperNode [2019-12-07 14:09:59,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:09:59,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:09:59,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:09:59,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:09:59,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:09:59,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:09:59,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:09:59,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:09:59,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... [2019-12-07 14:09:59,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:09:59,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:09:59,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:09:59,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:09:59,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/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 14:09:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:09:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 14:09:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:09:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:09:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 14:09:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 14:09:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 14:09:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 14:09:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 14:09:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:09:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:09:59,836 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 14:09:59,995 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:09:59,995 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 14:09:59,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:09:59 BoogieIcfgContainer [2019-12-07 14:09:59,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:09:59,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:09:59,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:09:59,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:09:59,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:09:59" (1/3) ... [2019-12-07 14:09:59,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7036b3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:09:59, skipping insertion in model container [2019-12-07 14:09:59,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:09:59" (2/3) ... [2019-12-07 14:10:00,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7036b3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:09:59, skipping insertion in model container [2019-12-07 14:10:00,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:09:59" (3/3) ... [2019-12-07 14:10:00,001 INFO L109 eAbstractionObserver]: Analyzing ICFG safe006_tso.opt.i [2019-12-07 14:10:00,007 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 14:10:00,007 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:10:00,011 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:10:00,012 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 14:10:00,027 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,028 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,028 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,028 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,028 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,028 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,028 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,029 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,029 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,029 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,029 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,029 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:10:00,041 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 14:10:00,053 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:10:00,053 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:10:00,053 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:10:00,054 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:10:00,054 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:10:00,054 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:10:00,054 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:10:00,054 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:10:00,061 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 43 transitions [2019-12-07 14:10:00,063 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions [2019-12-07 14:10:00,084 INFO L134 PetriNetUnfolder]: 1/41 cut-off events. [2019-12-07 14:10:00,085 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 14:10:00,089 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 6/45 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-07 14:10:00,091 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions [2019-12-07 14:10:00,099 INFO L134 PetriNetUnfolder]: 1/41 cut-off events. [2019-12-07 14:10:00,099 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 14:10:00,100 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 6/45 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-07 14:10:00,101 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 234 [2019-12-07 14:10:00,102 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 14:10:00,784 INFO L206 etLargeBlockEncoding]: Checked pairs total: 271 [2019-12-07 14:10:00,784 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2019-12-07 14:10:00,787 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 11 transitions [2019-12-07 14:10:00,792 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 22 states. [2019-12-07 14:10:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-12-07 14:10:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:10:00,797 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:10:00,798 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:10:00,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:10:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:10:00,802 INFO L82 PathProgramCache]: Analyzing trace with hash 608072787, now seen corresponding path program 1 times [2019-12-07 14:10:00,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:10:00,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372345685] [2019-12-07 14:10:00,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:10:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:10:00,944 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 14:10:00,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372345685] [2019-12-07 14:10:00,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:10:00,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 14:10:00,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708779368] [2019-12-07 14:10:00,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:10:00,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:10:00,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:10:00,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:10:00,960 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-12-07 14:10:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:10:00,977 INFO L93 Difference]: Finished difference Result 20 states and 31 transitions. [2019-12-07 14:10:00,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:10:00,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 14:10:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:10:00,985 INFO L225 Difference]: With dead ends: 20 [2019-12-07 14:10:00,985 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 14:10:00,986 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 14:10:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 14:10:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 14:10:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 14:10:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2019-12-07 14:10:01,008 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 23 transitions. Word has length 6 [2019-12-07 14:10:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:10:01,008 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 23 transitions. [2019-12-07 14:10:01,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:10:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 23 transitions. [2019-12-07 14:10:01,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 14:10:01,008 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:10:01,009 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:10:01,009 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:10:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:10:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1668374393, now seen corresponding path program 1 times [2019-12-07 14:10:01,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:10:01,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725666379] [2019-12-07 14:10:01,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:10:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:10:01,071 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 14:10:01,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725666379] [2019-12-07 14:10:01,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:10:01,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:10:01,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612208142] [2019-12-07 14:10:01,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:10:01,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:10:01,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:10:01,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:10:01,074 INFO L87 Difference]: Start difference. First operand 16 states and 23 transitions. Second operand 5 states. [2019-12-07 14:10:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:10:01,106 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2019-12-07 14:10:01,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:10:01,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 14:10:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:10:01,107 INFO L225 Difference]: With dead ends: 16 [2019-12-07 14:10:01,107 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 14:10:01,108 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:10:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 14:10:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 14:10:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 14:10:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-07 14:10:01,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2019-12-07 14:10:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:10:01,111 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-07 14:10:01,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:10:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-07 14:10:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 14:10:01,112 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:10:01,112 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:10:01,112 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:10:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:10:01,112 INFO L82 PathProgramCache]: Analyzing trace with hash 180062532, now seen corresponding path program 1 times [2019-12-07 14:10:01,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:10:01,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106966781] [2019-12-07 14:10:01,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:10:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:10:01,159 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 14:10:01,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106966781] [2019-12-07 14:10:01,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:10:01,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:10:01,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223074584] [2019-12-07 14:10:01,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:10:01,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:10:01,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:10:01,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:10:01,163 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-12-07 14:10:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:10:01,176 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-12-07 14:10:01,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:10:01,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 14:10:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:10:01,177 INFO L225 Difference]: With dead ends: 14 [2019-12-07 14:10:01,177 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 14:10:01,178 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 14:10:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 14:10:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 14:10:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:10:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-12-07 14:10:01,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2019-12-07 14:10:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:10:01,180 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-12-07 14:10:01,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:10:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-12-07 14:10:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 14:10:01,180 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:10:01,181 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:10:01,181 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:10:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:10:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash 244439922, now seen corresponding path program 2 times [2019-12-07 14:10:01,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:10:01,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850491146] [2019-12-07 14:10:01,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:10:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:10:01,215 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 14:10:01,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850491146] [2019-12-07 14:10:01,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:10:01,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:10:01,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335413248] [2019-12-07 14:10:01,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:10:01,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:10:01,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:10:01,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:10:01,217 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 4 states. [2019-12-07 14:10:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:10:01,226 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-12-07 14:10:01,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:10:01,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 14:10:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:10:01,226 INFO L225 Difference]: With dead ends: 8 [2019-12-07 14:10:01,226 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:10:01,227 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 14:10:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:10:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:10:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:10:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:10:01,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-07 14:10:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:10:01,227 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:10:01,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:10:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:10:01,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:10:01,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:10:01 BasicIcfg [2019-12-07 14:10:01,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:10:01,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:10:01,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:10:01,231 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:10:01,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:09:59" (3/4) ... [2019-12-07 14:10:01,233 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:10:01,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 14:10:01,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 14:10:01,241 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-12-07 14:10:01,241 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 14:10:01,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 14:10:01,269 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_18e65347-5e06-4b08-8764-8eb26525a779/bin/utaipan/witness.graphml [2019-12-07 14:10:01,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:10:01,271 INFO L168 Benchmark]: Toolchain (without parser) took 1887.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 934.5 MB in the beginning and 850.9 MB in the end (delta: 83.6 MB). Peak memory consumption was 186.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:10:01,271 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 953.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:10:01,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 934.5 MB in the beginning and 1.1 GB in the end (delta: -142.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:10:01,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.69 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:10:01,272 INFO L168 Benchmark]: Boogie Preprocessor took 16.65 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: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:10:01,273 INFO L168 Benchmark]: RCFGBuilder took 205.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:10:01,273 INFO L168 Benchmark]: TraceAbstraction took 1233.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 854.1 MB in the end (delta: 194.9 MB). Peak memory consumption was 194.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:10:01,273 INFO L168 Benchmark]: Witness Printer took 38.86 ms. Allocated memory is still 1.1 GB. Free memory was 854.1 MB in the beginning and 850.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:10:01,275 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 953.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 359.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 934.5 MB in the beginning and 1.1 GB in the end (delta: -142.9 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.69 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.65 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: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 205.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1233.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 854.1 MB in the end (delta: 194.9 MB). Peak memory consumption was 194.9 MB. Max. memory is 11.5 GB. * Witness Printer took 38.86 ms. Allocated memory is still 1.1 GB. Free memory was 854.1 MB in the beginning and 850.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 49 ProgramPointsBefore, 15 ProgramPointsAfterwards, 43 TransitionsBefore, 11 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 118 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 271 CheckedPairsTotal, 38 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 3 procedures, 43 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 16 SDslu, 12 SDs, 0 SdLazy, 22 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 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...