./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/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 f6479f9b206fa2208c49f4d03eecf38709949298 .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:54:38,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:54:38,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:54:38,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:54:38,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:54:38,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:54:38,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:54:38,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:54:38,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:54:38,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:54:38,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:54:38,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:54:38,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:54:38,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:54:38,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:54:38,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:54:38,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:54:38,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:54:38,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:54:38,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:54:38,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:54:38,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:54:38,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:54:38,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:54:38,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:54:38,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:54:38,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:54:38,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:54:38,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:54:38,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:54:38,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:54:38,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:54:38,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:54:38,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:54:38,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:54:38,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:54:38,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:54:38,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:54:38,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:54:38,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:54:38,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:54:38,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:54:38,276 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:54:38,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:54:38,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:54:38,277 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:54:38,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:54:38,277 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:54:38,277 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:54:38,278 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:54:38,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:54:38,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:54:38,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:54:38,278 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:54:38,278 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:54:38,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:54:38,279 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:54:38,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:54:38,280 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:54:38,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:54:38,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:54:38,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:54:38,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:54:38,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:54:38,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:54:38,281 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:54:38,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:54:38,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:54:38,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:54:38,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:54:38,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:54:38,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:54:38,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:54:38,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:54:38,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:54:38,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:54:38,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:54:38,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:54:38,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:54:38,283 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_966b65ed-daf3-4239-9552-1b03d1144110/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 -> f6479f9b206fa2208c49f4d03eecf38709949298 [2019-11-26 02:54:38,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:54:38,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:54:38,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:54:38,432 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:54:38,432 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:54:38,433 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i [2019-11-26 02:54:38,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/data/e1dd1b56c/8d47f13a291b457a94698edf80a09027/FLAG3f7fb0a18 [2019-11-26 02:54:38,965 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:54:38,966 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/sv-benchmarks/c/pthread-wmm/safe010_tso.oepc.i [2019-11-26 02:54:38,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/data/e1dd1b56c/8d47f13a291b457a94698edf80a09027/FLAG3f7fb0a18 [2019-11-26 02:54:39,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/data/e1dd1b56c/8d47f13a291b457a94698edf80a09027 [2019-11-26 02:54:39,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:54:39,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:54:39,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:39,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:54:39,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:54:39,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a15ffbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39, skipping insertion in model container [2019-11-26 02:54:39,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:54:39,081 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:54:39,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:39,572 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:54:39,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:54:39,682 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:54:39,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39 WrapperNode [2019-11-26 02:54:39,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:54:39,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:39,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:54:39,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:54:39,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:54:39,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:54:39,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:54:39,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:54:39,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... [2019-11-26 02:54:39,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:54:39,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:54:39,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:54:39,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:54:39,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/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 [2019-11-26 02:54:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:54:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:54:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:54:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:54:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:54:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:54:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:54:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:54:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:54:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:54:39,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:54:39,823 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:54:40,100 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:54:40,100 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:54:40,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:40 BoogieIcfgContainer [2019-11-26 02:54:40,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:54:40,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:54:40,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:54:40,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:54:40,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:54:39" (1/3) ... [2019-11-26 02:54:40,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1060cc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:40, skipping insertion in model container [2019-11-26 02:54:40,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:54:39" (2/3) ... [2019-11-26 02:54:40,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1060cc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:54:40, skipping insertion in model container [2019-11-26 02:54:40,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:40" (3/3) ... [2019-11-26 02:54:40,114 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2019-11-26 02:54:40,173 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,174 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,174 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,174 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,174 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,174 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,175 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,175 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,176 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,177 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,177 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,178 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,178 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,178 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,178 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,179 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,179 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,179 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,181 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,181 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,181 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,182 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,182 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,182 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,183 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,183 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,183 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,184 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,184 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,185 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,187 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,187 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:54:40,235 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:54:40,235 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:54:40,241 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:54:40,253 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:54:40,275 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:54:40,275 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:54:40,275 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:54:40,275 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:54:40,275 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:54:40,275 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:54:40,276 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:54:40,276 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:54:40,285 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 56 transitions [2019-11-26 02:54:40,346 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 286 states. [2019-11-26 02:54:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states. [2019-11-26 02:54:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 02:54:40,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:40,358 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:40,359 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:40,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:40,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1207578092, now seen corresponding path program 1 times [2019-11-26 02:54:40,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:40,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252433130] [2019-11-26 02:54:40,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:40,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252433130] [2019-11-26 02:54:40,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:40,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:54:40,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848598588] [2019-11-26 02:54:40,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:54:40,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:54:40,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:54:40,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:54:40,676 INFO L87 Difference]: Start difference. First operand 286 states. Second operand 5 states. [2019-11-26 02:54:40,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:40,789 INFO L93 Difference]: Finished difference Result 287 states and 646 transitions. [2019-11-26 02:54:40,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:40,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-26 02:54:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:40,816 INFO L225 Difference]: With dead ends: 287 [2019-11-26 02:54:40,816 INFO L226 Difference]: Without dead ends: 151 [2019-11-26 02:54:40,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:54:40,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-26 02:54:40,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-11-26 02:54:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-26 02:54:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 325 transitions. [2019-11-26 02:54:40,891 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 325 transitions. Word has length 25 [2019-11-26 02:54:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:40,891 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 325 transitions. [2019-11-26 02:54:40,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:54:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 325 transitions. [2019-11-26 02:54:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:54:40,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:40,893 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:40,894 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash -386286206, now seen corresponding path program 1 times [2019-11-26 02:54:40,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:40,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666410324] [2019-11-26 02:54:40,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:41,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666410324] [2019-11-26 02:54:41,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:41,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:54:41,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716065848] [2019-11-26 02:54:41,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:54:41,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:54:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:54:41,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:54:41,030 INFO L87 Difference]: Start difference. First operand 151 states and 325 transitions. Second operand 5 states. [2019-11-26 02:54:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:41,088 INFO L93 Difference]: Finished difference Result 124 states and 241 transitions. [2019-11-26 02:54:41,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:41,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-26 02:54:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:41,090 INFO L225 Difference]: With dead ends: 124 [2019-11-26 02:54:41,090 INFO L226 Difference]: Without dead ends: 109 [2019-11-26 02:54:41,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:54:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-26 02:54:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-11-26 02:54:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-26 02:54:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 213 transitions. [2019-11-26 02:54:41,099 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 213 transitions. Word has length 26 [2019-11-26 02:54:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:41,099 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 213 transitions. [2019-11-26 02:54:41,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:54:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 213 transitions. [2019-11-26 02:54:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:54:41,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:41,101 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:41,101 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash 662611594, now seen corresponding path program 1 times [2019-11-26 02:54:41,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:41,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838347744] [2019-11-26 02:54:41,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:41,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838347744] [2019-11-26 02:54:41,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:41,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:54:41,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752852105] [2019-11-26 02:54:41,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:54:41,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:54:41,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:54:41,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:54:41,228 INFO L87 Difference]: Start difference. First operand 109 states and 213 transitions. Second operand 6 states. [2019-11-26 02:54:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:41,316 INFO L93 Difference]: Finished difference Result 163 states and 330 transitions. [2019-11-26 02:54:41,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:54:41,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-26 02:54:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:41,317 INFO L225 Difference]: With dead ends: 163 [2019-11-26 02:54:41,317 INFO L226 Difference]: Without dead ends: 94 [2019-11-26 02:54:41,318 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:54:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-26 02:54:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2019-11-26 02:54:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-26 02:54:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 183 transitions. [2019-11-26 02:54:41,324 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 183 transitions. Word has length 27 [2019-11-26 02:54:41,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:41,325 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 183 transitions. [2019-11-26 02:54:41,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:54:41,325 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 183 transitions. [2019-11-26 02:54:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:54:41,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:54:41,326 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:54:41,326 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:54:41,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:54:41,327 INFO L82 PathProgramCache]: Analyzing trace with hash 392297504, now seen corresponding path program 2 times [2019-11-26 02:54:41,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:54:41,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373115528] [2019-11-26 02:54:41,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:54:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:54:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:54:41,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373115528] [2019-11-26 02:54:41,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:54:41,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:54:41,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939381082] [2019-11-26 02:54:41,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:54:41,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:54:41,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:54:41,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:54:41,481 INFO L87 Difference]: Start difference. First operand 94 states and 183 transitions. Second operand 8 states. [2019-11-26 02:54:41,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:54:41,588 INFO L93 Difference]: Finished difference Result 76 states and 141 transitions. [2019-11-26 02:54:41,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:54:41,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-11-26 02:54:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:54:41,589 INFO L225 Difference]: With dead ends: 76 [2019-11-26 02:54:41,589 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:54:41,589 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:54:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:54:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:54:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:54:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:54:41,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-11-26 02:54:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:54:41,590 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:54:41,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:54:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:54:41,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:54:41,593 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:54:41,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:54:41 BasicIcfg [2019-11-26 02:54:41,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:54:41,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:54:41,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:54:41,596 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:54:41,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:54:40" (3/4) ... [2019-11-26 02:54:41,599 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:54:41,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:54:41,605 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:54:41,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 02:54:41,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:54:41,609 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:54:41,657 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_966b65ed-daf3-4239-9552-1b03d1144110/bin/utaipan/witness.graphml [2019-11-26 02:54:41,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:54:41,660 INFO L168 Benchmark]: Toolchain (without parser) took 2651.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.1 MB in the beginning and 961.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 122.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:41,660 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:41,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:41,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:41,662 INFO L168 Benchmark]: Boogie Preprocessor took 30.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:41,665 INFO L168 Benchmark]: RCFGBuilder took 350.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:41,666 INFO L168 Benchmark]: TraceAbstraction took 1486.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.4 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:41,666 INFO L168 Benchmark]: Witness Printer took 62.23 ms. Allocated memory is still 1.2 GB. Free memory was 966.4 MB in the beginning and 961.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:41,673 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 674.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 350.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1486.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 966.4 MB in the end (delta: 113.7 MB). Peak memory consumption was 113.7 MB. Max. memory is 11.5 GB. * Witness Printer took 62.23 ms. Allocated memory is still 1.2 GB. Free memory was 966.4 MB in the beginning and 961.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 9 procedures, 66 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 141 SDslu, 343 SDs, 0 SdLazy, 54 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 8331 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...