./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/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 a0c4b02bc25104859076c6cd72166b3ed67280db .............................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:13:18,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:13:18,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:13:18,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:13:18,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:13:18,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:13:18,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:13:18,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:13:18,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:13:18,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:13:18,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:13:18,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:13:18,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:13:18,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:13:18,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:13:18,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:13:18,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:13:18,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:13:18,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:13:18,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:13:18,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:13:18,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:13:18,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:13:18,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:13:18,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:13:18,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:13:18,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:13:18,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:13:18,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:13:18,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:13:18,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:13:18,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:13:18,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:13:18,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:13:18,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:13:18,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:13:18,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:13:18,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:13:18,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:13:18,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:13:18,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:13:18,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:13:18,979 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:13:18,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:13:18,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:13:18,980 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:13:18,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:13:18,980 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:13:18,980 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:13:18,981 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:13:18,981 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:13:18,981 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:13:18,981 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:13:18,981 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:13:18,981 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:13:18,981 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:13:18,982 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:13:18,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:13:18,982 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:13:18,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:13:18,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:13:18,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:13:18,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:13:18,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:13:18,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:13:18,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:13:18,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:13:18,985 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_3d567611-cba8-4a42-bdc4-8404c631da1d/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 -> a0c4b02bc25104859076c6cd72166b3ed67280db [2019-12-07 20:13:19,083 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:13:19,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:13:19,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:13:19,097 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:13:19,098 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:13:19,098 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i [2019-12-07 20:13:19,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/data/9ad3df561/2b8d21455ecb46b893cb7f5e40820111/FLAG773571574 [2019-12-07 20:13:19,528 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:13:19,528 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/sv-benchmarks/c/pthread-wmm/safe003_tso.opt.i [2019-12-07 20:13:19,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/data/9ad3df561/2b8d21455ecb46b893cb7f5e40820111/FLAG773571574 [2019-12-07 20:13:19,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/data/9ad3df561/2b8d21455ecb46b893cb7f5e40820111 [2019-12-07 20:13:19,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:13:19,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:13:19,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:13:19,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:13:19,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:13:19,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:13:19" (1/1) ... [2019-12-07 20:13:19,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a891328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:19, skipping insertion in model container [2019-12-07 20:13:19,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:13:19" (1/1) ... [2019-12-07 20:13:19,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:13:19,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:13:20,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:13:20,202 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:13:20,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:13:20,277 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:13:20,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20 WrapperNode [2019-12-07 20:13:20,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:13:20,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:13:20,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:13:20,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:13:20,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:13:20,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:13:20,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:13:20,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:13:20,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... [2019-12-07 20:13:20,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:13:20,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:13:20,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:13:20,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:13:20,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/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 20:13:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:13:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 20:13:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:13:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:13:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 20:13:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 20:13:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 20:13:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 20:13:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 20:13:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 20:13:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 20:13:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:13:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:13:20,374 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 20:13:20,549 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:13:20,550 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 20:13:20,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:20 BoogieIcfgContainer [2019-12-07 20:13:20,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:13:20,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:13:20,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:13:20,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:13:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:13:19" (1/3) ... [2019-12-07 20:13:20,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fa81b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:13:20, skipping insertion in model container [2019-12-07 20:13:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:13:20" (2/3) ... [2019-12-07 20:13:20,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fa81b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:13:20, skipping insertion in model container [2019-12-07 20:13:20,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:20" (3/3) ... [2019-12-07 20:13:20,556 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2019-12-07 20:13:20,562 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 20:13:20,563 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:13:20,566 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:13:20,567 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 20:13:20,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,585 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,585 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,585 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,586 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,586 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,586 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,586 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,586 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,586 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,586 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,587 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,587 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,587 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,587 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,587 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,587 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,587 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:13:20,601 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 20:13:20,614 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:13:20,614 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:13:20,614 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:13:20,614 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:13:20,614 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:13:20,614 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:13:20,614 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:13:20,614 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:13:20,622 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 20:13:20,623 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 20:13:20,648 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 20:13:20,649 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:13:20,653 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:13:20,654 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 20:13:20,664 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 20:13:20,664 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:13:20,665 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 20:13:20,666 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 20:13:20,666 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 20:13:21,400 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 20:13:21,514 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-07 20:13:21,515 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 20:13:21,517 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 20:13:21,525 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 20:13:21,526 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 20:13:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:13:21,531 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:21,531 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:13:21,531 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:21,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:21,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-07 20:13:21,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:21,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454823191] [2019-12-07 20:13:21,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:13:21,707 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 20:13:21,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454823191] [2019-12-07 20:13:21,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:13:21,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:13:21,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993030385] [2019-12-07 20:13:21,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:13:21,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:13:21,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:13:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:13:21,724 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 20:13:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:13:21,777 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 20:13:21,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:13:21,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 20:13:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:13:21,787 INFO L225 Difference]: With dead ends: 58 [2019-12-07 20:13:21,788 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 20:13:21,789 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 20:13:21,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 20:13:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 20:13:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 20:13:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 20:13:21,814 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 20:13:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:13:21,814 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 20:13:21,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:13:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 20:13:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:13:21,815 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:21,815 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:13:21,815 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:21,816 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-12-07 20:13:21,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:21,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201951170] [2019-12-07 20:13:21,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:13:21,895 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 20:13:21,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201951170] [2019-12-07 20:13:21,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:13:21,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:13:21,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498520506] [2019-12-07 20:13:21,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:13:21,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:13:21,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:13:21,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:13:21,897 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 20:13:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:13:21,906 INFO L93 Difference]: Finished difference Result 36 states and 59 transitions. [2019-12-07 20:13:21,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:13:21,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 20:13:21,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:13:21,907 INFO L225 Difference]: With dead ends: 36 [2019-12-07 20:13:21,907 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 20:13:21,908 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:13:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 20:13:21,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-12-07 20:13:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 20:13:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2019-12-07 20:13:21,910 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 9 [2019-12-07 20:13:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:13:21,911 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2019-12-07 20:13:21,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:13:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2019-12-07 20:13:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:13:21,911 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:21,911 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:13:21,911 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1484294501, now seen corresponding path program 1 times [2019-12-07 20:13:21,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:21,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568370513] [2019-12-07 20:13:21,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:13:21,946 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 20:13:21,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568370513] [2019-12-07 20:13:21,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:13:21,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:13:21,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335593155] [2019-12-07 20:13:21,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:13:21,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:13:21,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:13:21,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:13:21,948 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 3 states. [2019-12-07 20:13:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:13:21,951 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2019-12-07 20:13:21,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:13:21,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 20:13:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:13:21,952 INFO L225 Difference]: With dead ends: 20 [2019-12-07 20:13:21,953 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 20:13:21,953 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 20:13:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 20:13:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 20:13:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 20:13:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2019-12-07 20:13:21,956 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2019-12-07 20:13:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:13:21,956 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-07 20:13:21,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:13:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-12-07 20:13:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:13:21,957 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:13:21,957 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:13:21,957 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:13:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:13:21,957 INFO L82 PathProgramCache]: Analyzing trace with hash -577580537, now seen corresponding path program 1 times [2019-12-07 20:13:21,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:13:21,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886892247] [2019-12-07 20:13:21,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:13:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:13:22,009 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 20:13:22,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886892247] [2019-12-07 20:13:22,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:13:22,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:13:22,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380668568] [2019-12-07 20:13:22,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:13:22,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:13:22,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:13:22,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:13:22,010 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 5 states. [2019-12-07 20:13:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:13:22,019 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2019-12-07 20:13:22,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:13:22,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 20:13:22,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:13:22,019 INFO L225 Difference]: With dead ends: 17 [2019-12-07 20:13:22,019 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:13:22,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:13:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:13:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:13:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:13:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:13:22,020 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 20:13:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:13:22,020 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:13:22,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:13:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:13:22,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:13:22,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:13:22 BasicIcfg [2019-12-07 20:13:22,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:13:22,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:13:22,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:13:22,024 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:13:22,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:13:20" (3/4) ... [2019-12-07 20:13:22,027 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:13:22,031 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 20:13:22,031 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 20:13:22,031 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 20:13:22,035 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 20:13:22,035 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 20:13:22,035 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:13:22,068 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3d567611-cba8-4a42-bdc4-8404c631da1d/bin/utaipan/witness.graphml [2019-12-07 20:13:22,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:13:22,070 INFO L168 Benchmark]: Toolchain (without parser) took 2162.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -114.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:22,070 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:22,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -136.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:13:22,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.80 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 20:13:22,071 INFO L168 Benchmark]: Boogie Preprocessor took 17.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:22,072 INFO L168 Benchmark]: RCFGBuilder took 223.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:13:22,072 INFO L168 Benchmark]: TraceAbstraction took 1472.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:13:22,073 INFO L168 Benchmark]: Witness Printer took 45.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:13:22,075 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 368.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -136.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.53 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 223.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1472.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 45.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 33 SDslu, 21 SDs, 0 SdLazy, 19 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1778 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...