./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-1_3-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3-join.i -s /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 158852c017926f5105117106d37baef2e7c75d8b ............................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:52:18,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:52:18,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:52:18,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:52:18,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:52:18,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:52:18,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:52:18,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:52:18,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:52:18,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:52:18,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:52:18,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:52:18,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:52:18,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:52:18,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:52:18,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:52:18,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:52:18,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:52:18,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:52:18,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:52:18,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:52:18,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:52:18,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:52:18,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:52:18,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:52:18,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:52:18,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:52:18,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:52:18,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:52:18,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:52:18,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:52:18,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:52:18,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:52:18,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:52:18,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:52:18,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:52:18,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:52:18,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:52:18,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:52:18,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:52:18,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:52:18,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:52:18,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:52:18,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:52:18,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:52:18,326 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:52:18,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:52:18,326 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:52:18,327 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:52:18,327 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:52:18,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:52:18,328 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:52:18,328 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:52:18,328 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:52:18,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:52:18,329 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:52:18,329 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:52:18,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:52:18,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:52:18,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:52:18,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:52:18,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:52:18,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:52:18,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:52:18,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:52:18,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:52:18,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:52:18,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:52:18,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:52:18,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:52:18,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:52:18,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:52:18,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:52:18,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:52:18,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:52:18,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:52:18,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:52:18,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:52:18,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:52:18,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:52:18,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:52:18,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:52:18,337 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158852c017926f5105117106d37baef2e7c75d8b [2020-11-22 12:52:18,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:52:18,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:52:18,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:52:18,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:52:18,732 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:52:18,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/../../sv-benchmarks/c/ldv-races/race-1_3-join.i [2020-11-22 12:52:18,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/data/291de1677/f7d85a737796473eb1d4d6500576ce01/FLAGf0b830e9f [2020-11-22 12:52:19,631 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:52:19,633 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/sv-benchmarks/c/ldv-races/race-1_3-join.i [2020-11-22 12:52:19,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/data/291de1677/f7d85a737796473eb1d4d6500576ce01/FLAGf0b830e9f [2020-11-22 12:52:19,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/data/291de1677/f7d85a737796473eb1d4d6500576ce01 [2020-11-22 12:52:19,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:52:19,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:52:19,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:19,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:52:19,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:52:19,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:19" (1/1) ... [2020-11-22 12:52:19,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cd3e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:19, skipping insertion in model container [2020-11-22 12:52:19,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:19" (1/1) ... [2020-11-22 12:52:19,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:52:19,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:52:20,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:20,788 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:52:20,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:21,277 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:52:21,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21 WrapperNode [2020-11-22 12:52:21,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:21,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:52:21,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:52:21,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:52:21,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:52:21,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:52:21,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:52:21,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:52:21,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... [2020-11-22 12:52:21,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:52:21,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:52:21,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:52:21,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:52:21,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/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 [2020-11-22 12:52:21,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:52:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:52:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:52:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 12:52:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-22 12:52:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 12:52:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:52:21,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:52:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:52:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-11-22 12:52:21,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-11-22 12:52:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:52:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:52:21,542 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:52:22,371 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:52:22,372 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-22 12:52:22,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:22 BoogieIcfgContainer [2020-11-22 12:52:22,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:52:22,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:52:22,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:52:22,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:52:22,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:52:19" (1/3) ... [2020-11-22 12:52:22,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5760ff4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:52:22, skipping insertion in model container [2020-11-22 12:52:22,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:21" (2/3) ... [2020-11-22 12:52:22,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5760ff4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:52:22, skipping insertion in model container [2020-11-22 12:52:22,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:22" (3/3) ... [2020-11-22 12:52:22,395 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2020-11-22 12:52:22,414 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:52:22,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:52:22,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-22 12:52:22,422 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:52:22,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,453 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,453 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,462 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,462 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,463 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,463 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:52:22,477 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-22 12:52:22,488 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-22 12:52:22,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:52:22,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:52:22,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:52:22,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:52:22,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:52:22,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:52:22,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:52:22,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:52:22,522 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:52:22,524 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 99 transitions, 206 flow [2020-11-22 12:52:22,527 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 99 transitions, 206 flow [2020-11-22 12:52:22,528 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 99 transitions, 206 flow [2020-11-22 12:52:22,573 INFO L129 PetriNetUnfolder]: 7/113 cut-off events. [2020-11-22 12:52:22,573 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-22 12:52:22,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 7/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 194 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-11-22 12:52:22,579 INFO L116 LiptonReduction]: Number of co-enabled transitions 238 [2020-11-22 12:52:25,288 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-11-22 12:52:26,396 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-22 12:52:26,595 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-22 12:52:26,738 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-22 12:52:26,894 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-22 12:52:26,899 INFO L131 LiptonReduction]: Checked pairs total: 302 [2020-11-22 12:52:26,899 INFO L133 LiptonReduction]: Total number of compositions: 130 [2020-11-22 12:52:26,905 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 38 flow [2020-11-22 12:52:26,911 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 23 states. [2020-11-22 12:52:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-22 12:52:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2020-11-22 12:52:26,917 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:26,918 INFO L422 BasicCegarLoop]: trace histogram [1] [2020-11-22 12:52:26,918 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:26,924 INFO L82 PathProgramCache]: Analyzing trace with hash 435, now seen corresponding path program 1 times [2020-11-22 12:52:26,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:52:26,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383378016] [2020-11-22 12:52:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:52:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:27,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383378016] [2020-11-22 12:52:27,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:27,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2020-11-22 12:52:27,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763827687] [2020-11-22 12:52:27,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:52:27,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:52:27,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:52:27,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:52:27,261 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-22 12:52:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:27,271 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-22 12:52:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:52:27,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2020-11-22 12:52:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:27,280 INFO L225 Difference]: With dead ends: 20 [2020-11-22 12:52:27,281 INFO L226 Difference]: Without dead ends: 13 [2020-11-22 12:52:27,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:52:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-22 12:52:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-22 12:52:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-22 12:52:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-22 12:52:27,306 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 1 [2020-11-22 12:52:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:27,307 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-22 12:52:27,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:52:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-22 12:52:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-22 12:52:27,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:27,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-22 12:52:27,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:52:27,309 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:27,309 INFO L82 PathProgramCache]: Analyzing trace with hash 433996, now seen corresponding path program 1 times [2020-11-22 12:52:27,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:52:27,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457396231] [2020-11-22 12:52:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:52:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:27,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457396231] [2020-11-22 12:52:27,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:27,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:52:27,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557516744] [2020-11-22 12:52:27,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:52:27,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:52:27,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:52:27,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:27,447 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-11-22 12:52:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:27,459 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-11-22 12:52:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:52:27,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-22 12:52:27,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:27,460 INFO L225 Difference]: With dead ends: 11 [2020-11-22 12:52:27,461 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:52:27,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:52:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 12:52:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 12:52:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-22 12:52:27,464 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 3 [2020-11-22 12:52:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:27,464 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-22 12:52:27,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:52:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-22 12:52:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:52:27,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:27,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:52:27,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:52:27,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:27,466 INFO L82 PathProgramCache]: Analyzing trace with hash 413130641, now seen corresponding path program 1 times [2020-11-22 12:52:27,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:52:27,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219512170] [2020-11-22 12:52:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:52:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:27,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219512170] [2020-11-22 12:52:27,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:27,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:52:27,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085529672] [2020-11-22 12:52:27,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:52:27,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:52:27,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:52:27,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:27,565 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2020-11-22 12:52:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:27,587 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-22 12:52:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:52:27,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 12:52:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:27,588 INFO L225 Difference]: With dead ends: 10 [2020-11-22 12:52:27,588 INFO L226 Difference]: Without dead ends: 7 [2020-11-22 12:52:27,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:52:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-11-22 12:52:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-11-22 12:52:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-22 12:52:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-11-22 12:52:27,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2020-11-22 12:52:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:27,591 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-11-22 12:52:27,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:52:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-11-22 12:52:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:52:27,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:27,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:52:27,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:52:27,592 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:27,593 INFO L82 PathProgramCache]: Analyzing trace with hash -77847774, now seen corresponding path program 1 times [2020-11-22 12:52:27,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:52:27,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679369808] [2020-11-22 12:52:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:52:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:52:27,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:52:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:52:27,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:52:27,755 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:52:27,756 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:52:27,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:52:27,756 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-22 12:52:27,761 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [398] [398] L1734-->L1711: Formula: (and (= |ULTIMATE.start_ldv_assert_#in~expression_Out1512475364| 1) (= ULTIMATE.start_ldv_assert_~expression_Out1512475364 |ULTIMATE.start_ldv_assert_#in~expression_Out1512475364|) (= |ULTIMATE.start_reach_error_#t~nondet32.offset_In1512475364| |ULTIMATE.start_reach_error_#t~nondet32.offset_Out1512475364|) (= |ULTIMATE.start_reach_error_#t~nondet32.base_In1512475364| |ULTIMATE.start_reach_error_#t~nondet32.base_Out1512475364|) (<= |ULTIMATE.start_module_init_#t~nondet34_Out1512475364| 2147483647) (= |#pthreadsMutex_Out1512475364| (store |#pthreadsMutex_In1512475364| |~#mutex~0.base_In1512475364| (store (select |#pthreadsMutex_In1512475364| |~#mutex~0.base_In1512475364|) |~#mutex~0.offset_In1512475364| 0))) (<= 0 (+ |ULTIMATE.start_module_init_#t~nondet34_Out1512475364| 2147483648)) (= ~pdev~0_Out1512475364 1)) InVars {#pthreadsMutex=|#pthreadsMutex_In1512475364|, ~#mutex~0.base=|~#mutex~0.base_In1512475364|, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_In1512475364|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_In1512475364|, ~#mutex~0.offset=|~#mutex~0.offset_In1512475364|} OutVars{ULTIMATE.start_module_init_#res=|ULTIMATE.start_module_init_#res_Out1512475364|, #pthreadsMutex=|#pthreadsMutex_Out1512475364|, ~#mutex~0.base=|~#mutex~0.base_In1512475364|, ~pdev~0=~pdev~0_Out1512475364, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_Out1512475364|, ULTIMATE.start_module_init_#t~nondet35=|ULTIMATE.start_module_init_#t~nondet35_Out1512475364|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_Out1512475364|, ~#mutex~0.offset=|~#mutex~0.offset_In1512475364|, ULTIMATE.start_module_init_#t~nondet34=|ULTIMATE.start_module_init_#t~nondet34_Out1512475364|, ULTIMATE.start_ldv_assert_#in~expression=|ULTIMATE.start_ldv_assert_#in~expression_Out1512475364|, ULTIMATE.start_ldv_assert_~expression=ULTIMATE.start_ldv_assert_~expression_Out1512475364} AuxVars[] AssignedVars[ULTIMATE.start_module_init_#res, #pthreadsMutex, ~pdev~0, ULTIMATE.start_reach_error_#t~nondet32.offset, ULTIMATE.start_module_init_#t~nondet35, ULTIMATE.start_reach_error_#t~nondet32.base, ULTIMATE.start_module_init_#t~nondet34, ULTIMATE.start_ldv_assert_#in~expression, ULTIMATE.start_ldv_assert_~expression] because there is no mapped edge [2020-11-22 12:52:27,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:52:27 BasicIcfg [2020-11-22 12:52:27,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:52:27,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:52:27,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:52:27,789 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:52:27,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:22" (3/4) ... [2020-11-22 12:52:27,791 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:52:27,792 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [398] [398] L1734-->L1711: Formula: (and (= |ULTIMATE.start_ldv_assert_#in~expression_Out1512475364| 1) (= ULTIMATE.start_ldv_assert_~expression_Out1512475364 |ULTIMATE.start_ldv_assert_#in~expression_Out1512475364|) (= |ULTIMATE.start_reach_error_#t~nondet32.offset_In1512475364| |ULTIMATE.start_reach_error_#t~nondet32.offset_Out1512475364|) (= |ULTIMATE.start_reach_error_#t~nondet32.base_In1512475364| |ULTIMATE.start_reach_error_#t~nondet32.base_Out1512475364|) (<= |ULTIMATE.start_module_init_#t~nondet34_Out1512475364| 2147483647) (= |#pthreadsMutex_Out1512475364| (store |#pthreadsMutex_In1512475364| |~#mutex~0.base_In1512475364| (store (select |#pthreadsMutex_In1512475364| |~#mutex~0.base_In1512475364|) |~#mutex~0.offset_In1512475364| 0))) (<= 0 (+ |ULTIMATE.start_module_init_#t~nondet34_Out1512475364| 2147483648)) (= ~pdev~0_Out1512475364 1)) InVars {#pthreadsMutex=|#pthreadsMutex_In1512475364|, ~#mutex~0.base=|~#mutex~0.base_In1512475364|, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_In1512475364|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_In1512475364|, ~#mutex~0.offset=|~#mutex~0.offset_In1512475364|} OutVars{ULTIMATE.start_module_init_#res=|ULTIMATE.start_module_init_#res_Out1512475364|, #pthreadsMutex=|#pthreadsMutex_Out1512475364|, ~#mutex~0.base=|~#mutex~0.base_In1512475364|, ~pdev~0=~pdev~0_Out1512475364, ULTIMATE.start_reach_error_#t~nondet32.offset=|ULTIMATE.start_reach_error_#t~nondet32.offset_Out1512475364|, ULTIMATE.start_module_init_#t~nondet35=|ULTIMATE.start_module_init_#t~nondet35_Out1512475364|, ULTIMATE.start_reach_error_#t~nondet32.base=|ULTIMATE.start_reach_error_#t~nondet32.base_Out1512475364|, ~#mutex~0.offset=|~#mutex~0.offset_In1512475364|, ULTIMATE.start_module_init_#t~nondet34=|ULTIMATE.start_module_init_#t~nondet34_Out1512475364|, ULTIMATE.start_ldv_assert_#in~expression=|ULTIMATE.start_ldv_assert_#in~expression_Out1512475364|, ULTIMATE.start_ldv_assert_~expression=ULTIMATE.start_ldv_assert_~expression_Out1512475364} AuxVars[] AssignedVars[ULTIMATE.start_module_init_#res, #pthreadsMutex, ~pdev~0, ULTIMATE.start_reach_error_#t~nondet32.offset, ULTIMATE.start_module_init_#t~nondet35, ULTIMATE.start_reach_error_#t~nondet32.base, ULTIMATE.start_module_init_#t~nondet34, ULTIMATE.start_ldv_assert_#in~expression, ULTIMATE.start_ldv_assert_~expression] because there is no mapped edge [2020-11-22 12:52:27,860 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_21935aea-3f16-4d2e-9636-d2326f372ef1/bin/utaipan/witness.graphml [2020-11-22 12:52:27,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:52:27,862 INFO L168 Benchmark]: Toolchain (without parser) took 8103.06 ms. Allocated memory was 107.0 MB in the beginning and 167.8 MB in the end (delta: 60.8 MB). Free memory was 70.4 MB in the beginning and 73.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:27,863 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 80.7 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:52:27,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1516.18 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 70.2 MB in the beginning and 106.3 MB in the end (delta: -36.0 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:27,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.67 ms. Allocated memory is still 136.3 MB. Free memory was 106.3 MB in the beginning and 103.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:27,872 INFO L168 Benchmark]: Boogie Preprocessor took 79.92 ms. Allocated memory is still 136.3 MB. Free memory was 103.3 MB in the beginning and 100.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:27,873 INFO L168 Benchmark]: RCFGBuilder took 921.75 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 107.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 46.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:27,874 INFO L168 Benchmark]: TraceAbstraction took 5412.01 ms. Allocated memory was 136.3 MB in the beginning and 167.8 MB in the end (delta: 31.5 MB). Free memory was 107.2 MB in the beginning and 75.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 62.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:27,874 INFO L168 Benchmark]: Witness Printer took 72.23 ms. Allocated memory is still 167.8 MB. Free memory was 75.1 MB in the beginning and 73.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:27,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 80.7 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1516.18 ms. Allocated memory was 107.0 MB in the beginning and 136.3 MB in the end (delta: 29.4 MB). Free memory was 70.2 MB in the beginning and 106.3 MB in the end (delta: -36.0 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.67 ms. Allocated memory is still 136.3 MB. Free memory was 106.3 MB in the beginning and 103.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.92 ms. Allocated memory is still 136.3 MB. Free memory was 103.3 MB in the beginning and 100.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 921.75 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 107.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 46.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5412.01 ms. Allocated memory was 136.3 MB in the beginning and 167.8 MB in the end (delta: 31.5 MB). Free memory was 107.2 MB in the beginning and 75.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 62.6 MB. Max. memory is 16.1 GB. * Witness Printer took 72.23 ms. Allocated memory is still 167.8 MB. Free memory was 75.1 MB in the beginning and 73.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 175 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 95 PlacesBefore, 17 PlacesAfterwards, 99 TransitionsBefore, 15 TransitionsAfterwards, 238 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 7 ConcurrentYvCompositions, 6 ChoiceCompositions, 130 TotalNumberOfCompositions, 302 MoverChecksTotal - CounterExampleResult [Line: 1693]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={7:0}, pdev=1, t1={9:0}] [L1713] 0 return 0; [L1734] COND FALSE 0 !(module_init()!=0) [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={7:0}, pdev=4, t1={9:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1693] COND FALSE 0 !(0) [L1693] 0 __assert_fail ("0", "race-1_3-join.c", 10, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={7:0}, pdev=6, t1={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...