./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/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 0bd56492ce0265462bf8cebecc0a24e28eb1d15f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:57:13,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:57:13,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:57:13,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:57:13,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:57:13,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:57:13,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:57:13,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:57:13,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:57:13,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:57:13,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:57:13,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:57:13,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:57:13,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:57:13,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:57:13,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:57:13,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:57:13,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:57:13,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:57:13,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:57:13,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:57:13,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:57:13,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:57:13,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:57:13,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:57:13,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:57:13,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:57:13,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:57:13,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:57:13,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:57:13,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:57:13,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:57:13,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:57:13,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:57:13,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:57:13,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:57:13,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:57:13,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:57:13,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:57:13,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:57:13,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:57:13,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:57:13,422 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:57:13,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:57:13,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:57:13,423 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:57:13,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:57:13,423 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:57:13,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:57:13,424 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:57:13,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:57:13,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:57:13,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:57:13,424 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:57:13,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:57:13,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:57:13,425 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:57:13,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:57:13,425 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:57:13,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:57:13,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:57:13,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:57:13,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:57:13,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:57:13,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:57:13,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:57:13,426 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:57:13,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:57:13,427 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:57:13,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:57:13,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:57:13,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:57:13,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:57:13,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:57:13,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:57:13,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:57:13,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:57:13,428 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:57:13,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:57:13,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:57:13,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:57:13,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:57:13,429 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_d96d57c3-5eea-4db6-9df5-8f0dfef38705/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 -> 0bd56492ce0265462bf8cebecc0a24e28eb1d15f [2019-12-07 20:57:13,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:57:13,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:57:13,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:57:13,542 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:57:13,542 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:57:13,543 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2019-12-07 20:57:13,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/data/dd3253e2f/781bf73efeb147a8afd81996eb51e294/FLAGa651e4e71 [2019-12-07 20:57:14,059 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:57:14,060 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2019-12-07 20:57:14,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/data/dd3253e2f/781bf73efeb147a8afd81996eb51e294/FLAGa651e4e71 [2019-12-07 20:57:14,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/data/dd3253e2f/781bf73efeb147a8afd81996eb51e294 [2019-12-07 20:57:14,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:57:14,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:57:14,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:14,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:57:14,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:57:14,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d86ac49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14, skipping insertion in model container [2019-12-07 20:57:14,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:57:14,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:57:14,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:14,828 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:57:14,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:14,902 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:57:14,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14 WrapperNode [2019-12-07 20:57:14,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:14,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:14,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:57:14,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:57:14,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:14,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:57:14,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:57:14,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:57:14,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... [2019-12-07 20:57:14,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:57:14,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:57:14,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:57:14,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:57:14,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:57:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 20:57:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 20:57:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 20:57:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 20:57:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:57:15,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:57:15,000 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 20:57:15,182 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:57:15,182 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 20:57:15,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:15 BoogieIcfgContainer [2019-12-07 20:57:15,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:57:15,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:57:15,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:57:15,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:57:15,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:57:14" (1/3) ... [2019-12-07 20:57:15,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71384a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:15, skipping insertion in model container [2019-12-07 20:57:15,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:14" (2/3) ... [2019-12-07 20:57:15,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71384a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:15, skipping insertion in model container [2019-12-07 20:57:15,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:15" (3/3) ... [2019-12-07 20:57:15,187 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2019-12-07 20:57:15,193 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 20:57:15,193 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:57:15,197 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:57:15,198 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 20:57:15,215 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,215 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,215 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,215 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,216 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,216 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,216 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,216 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,216 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,216 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,216 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,217 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,217 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,217 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,217 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,217 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,217 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,217 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:57:15,233 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 20:57:15,245 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:57:15,245 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:57:15,245 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:57:15,245 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:57:15,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:57:15,245 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:57:15,245 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:57:15,245 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:57:15,253 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-07 20:57:15,255 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 20:57:15,280 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 20:57:15,280 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:57:15,284 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:57:15,286 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 20:57:15,295 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 20:57:15,295 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:57:15,296 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:57:15,297 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 20:57:15,298 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 20:57:16,096 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-07 20:57:16,096 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 20:57:16,098 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 20:57:16,106 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 20:57:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 20:57:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:57:16,113 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:16,113 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:16,113 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:16,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2019279745, now seen corresponding path program 1 times [2019-12-07 20:57:16,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:16,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563425125] [2019-12-07 20:57:16,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:16,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563425125] [2019-12-07 20:57:16,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:16,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:57:16,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342501234] [2019-12-07 20:57:16,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:57:16,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:16,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:57:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:16,316 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-07 20:57:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:16,337 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2019-12-07 20:57:16,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:57:16,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 20:57:16,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:16,347 INFO L225 Difference]: With dead ends: 50 [2019-12-07 20:57:16,347 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 20:57:16,348 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 20:57:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 20:57:16,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 20:57:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 20:57:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-07 20:57:16,375 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-07 20:57:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:16,375 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-07 20:57:16,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:57:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-07 20:57:16,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:57:16,376 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:16,377 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:16,377 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:16,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1392638966, now seen corresponding path program 1 times [2019-12-07 20:57:16,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:16,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540281555] [2019-12-07 20:57:16,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:16,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540281555] [2019-12-07 20:57:16,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:16,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:57:16,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477886215] [2019-12-07 20:57:16,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:57:16,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:16,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:57:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:57:16,448 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 4 states. [2019-12-07 20:57:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:16,468 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2019-12-07 20:57:16,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:57:16,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 20:57:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:16,469 INFO L225 Difference]: With dead ends: 34 [2019-12-07 20:57:16,469 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 20:57:16,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:16,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 20:57:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 20:57:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 20:57:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-07 20:57:16,474 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 9 [2019-12-07 20:57:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:16,475 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-07 20:57:16,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:57:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-07 20:57:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:57:16,476 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:16,476 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:16,476 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:16,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1826755775, now seen corresponding path program 1 times [2019-12-07 20:57:16,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:16,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817866277] [2019-12-07 20:57:16,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:16,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817866277] [2019-12-07 20:57:16,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:16,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:57:16,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197314134] [2019-12-07 20:57:16,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:57:16,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:16,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:57:16,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:16,540 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 5 states. [2019-12-07 20:57:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:16,572 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2019-12-07 20:57:16,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:57:16,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 20:57:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:16,573 INFO L225 Difference]: With dead ends: 37 [2019-12-07 20:57:16,573 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 20:57:16,573 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 20:57:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 20:57:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 20:57:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 20:57:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 48 transitions. [2019-12-07 20:57:16,576 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 48 transitions. Word has length 9 [2019-12-07 20:57:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:16,576 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 48 transitions. [2019-12-07 20:57:16,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:57:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 48 transitions. [2019-12-07 20:57:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:57:16,577 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:16,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:16,577 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:16,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:16,577 INFO L82 PathProgramCache]: Analyzing trace with hash 222216556, now seen corresponding path program 1 times [2019-12-07 20:57:16,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:16,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454516498] [2019-12-07 20:57:16,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:16,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454516498] [2019-12-07 20:57:16,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:16,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:57:16,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293847597] [2019-12-07 20:57:16,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:57:16,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:16,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:57:16,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:57:16,613 INFO L87 Difference]: Start difference. First operand 29 states and 48 transitions. Second operand 4 states. [2019-12-07 20:57:16,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:16,624 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2019-12-07 20:57:16,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:57:16,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 20:57:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:16,625 INFO L225 Difference]: With dead ends: 32 [2019-12-07 20:57:16,625 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 20:57:16,625 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 20:57:16,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 20:57:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 20:57:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2019-12-07 20:57:16,627 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 10 [2019-12-07 20:57:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:16,628 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2019-12-07 20:57:16,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:57:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2019-12-07 20:57:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:57:16,628 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:16,628 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:16,628 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:16,629 INFO L82 PathProgramCache]: Analyzing trace with hash -794534279, now seen corresponding path program 1 times [2019-12-07 20:57:16,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:16,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747450499] [2019-12-07 20:57:16,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:16,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747450499] [2019-12-07 20:57:16,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:16,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:57:16,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170141608] [2019-12-07 20:57:16,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:57:16,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:16,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:57:16,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:57:16,664 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand 3 states. [2019-12-07 20:57:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:16,668 INFO L93 Difference]: Finished difference Result 24 states and 37 transitions. [2019-12-07 20:57:16,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:57:16,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 20:57:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:16,670 INFO L225 Difference]: With dead ends: 24 [2019-12-07 20:57:16,670 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 20:57:16,670 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 20:57:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 20:57:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 20:57:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 20:57:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2019-12-07 20:57:16,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 10 [2019-12-07 20:57:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:16,673 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2019-12-07 20:57:16,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:57:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2019-12-07 20:57:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:57:16,674 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:16,674 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:16,674 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:16,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1700901458, now seen corresponding path program 1 times [2019-12-07 20:57:16,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:16,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783924383] [2019-12-07 20:57:16,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:16,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783924383] [2019-12-07 20:57:16,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:16,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:57:16,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011431515] [2019-12-07 20:57:16,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:57:16,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:16,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:57:16,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:57:16,710 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 4 states. [2019-12-07 20:57:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:16,723 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2019-12-07 20:57:16,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:57:16,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 20:57:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:16,724 INFO L225 Difference]: With dead ends: 26 [2019-12-07 20:57:16,724 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 20:57:16,725 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 20:57:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 20:57:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:57:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 20:57:16,727 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-12-07 20:57:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:16,727 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 20:57:16,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:57:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 20:57:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:57:16,728 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:16,728 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:16,728 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:16,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1139321736, now seen corresponding path program 2 times [2019-12-07 20:57:16,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:16,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053731665] [2019-12-07 20:57:16,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:57:16,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053731665] [2019-12-07 20:57:16,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:16,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:57:16,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378538220] [2019-12-07 20:57:16,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:57:16,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:16,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:57:16,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:57:16,768 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-12-07 20:57:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:16,780 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-07 20:57:16,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:57:16,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 20:57:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:16,781 INFO L225 Difference]: With dead ends: 14 [2019-12-07 20:57:16,781 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:57:16,781 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:57:16,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:57:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:57:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:57:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:57:16,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 20:57:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:16,782 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:57:16,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:57:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:57:16,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:57:16,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:57:16 BasicIcfg [2019-12-07 20:57:16,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:57:16,785 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:57:16,785 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:57:16,785 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:57:16,785 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:15" (3/4) ... [2019-12-07 20:57:16,788 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:57:16,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 20:57:16,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 20:57:16,793 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 20:57:16,796 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 20:57:16,797 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 20:57:16,797 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:57:16,831 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d96d57c3-5eea-4db6-9df5-8f0dfef38705/bin/utaipan/witness.graphml [2019-12-07 20:57:16,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:57:16,833 INFO L168 Benchmark]: Toolchain (without parser) took 2264.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 933.5 MB in the beginning and 1.0 GB in the end (delta: -93.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:16,834 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:16,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 933.5 MB in the beginning and 1.1 GB in the end (delta: -136.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:16,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:16,835 INFO L168 Benchmark]: Boogie Preprocessor took 17.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:16,835 INFO L168 Benchmark]: RCFGBuilder took 231.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:16,836 INFO L168 Benchmark]: TraceAbstraction took 1601.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:16,836 INFO L168 Benchmark]: Witness Printer took 46.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:16,838 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 334.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 933.5 MB in the beginning and 1.1 GB in the end (delta: -136.9 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 231.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1601.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. * Witness Printer took 46.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 64 ProgramPointsBefore, 21 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 228 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 55 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 61 SDslu, 45 SDs, 0 SdLazy, 39 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 2731 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...