./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:21:39,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:21:39,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:21:39,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:21:39,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:21:39,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:21:39,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:21:39,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:21:39,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:21:39,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:21:39,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:21:39,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:21:39,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:21:39,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:21:39,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:21:39,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:21:39,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:21:39,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:21:39,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:21:39,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:21:39,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:21:39,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:21:39,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:21:39,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:21:39,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:21:39,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:21:39,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:21:39,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:21:39,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:21:39,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:21:39,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:21:39,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:21:39,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:21:39,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:21:39,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:21:39,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:21:39,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:21:39,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:21:39,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:21:39,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:21:39,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:21:39,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-03 02:21:39,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:21:39,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:21:39,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:21:39,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:21:39,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:21:39,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:21:39,379 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:21:39,380 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:21:39,380 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:21:39,391 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:21:39,392 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:21:39,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:21:39,393 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:21:39,393 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:21:39,393 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:21:39,393 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:21:39,394 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:21:39,394 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:21:39,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:21:39,395 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:21:39,395 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:21:39,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:21:39,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:21:39,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:21:39,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:21:39,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:21:39,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:21:39,397 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-03 02:21:39,397 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:21:39,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:21:39,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:21:39,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:21:39,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:21:39,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:21:39,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:39,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:21:39,399 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:21:39,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:21:39,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:21:39,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:21:39,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:21:39,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:21:39,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:21:39,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2022-11-03 02:21:39,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:21:39,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:21:39,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:21:39,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:21:39,698 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:21:39,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2022-11-03 02:21:39,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/data/5eb7e1486/d965474b15ee45f7bc16a723c6c5d795/FLAG7466ced35 [2022-11-03 02:21:40,390 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:21:40,391 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2022-11-03 02:21:40,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/data/5eb7e1486/d965474b15ee45f7bc16a723c6c5d795/FLAG7466ced35 [2022-11-03 02:21:40,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/data/5eb7e1486/d965474b15ee45f7bc16a723c6c5d795 [2022-11-03 02:21:40,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:21:40,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:21:40,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:40,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:21:40,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:21:40,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:40" (1/1) ... [2022-11-03 02:21:40,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db2428c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:40, skipping insertion in model container [2022-11-03 02:21:40,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:21:40" (1/1) ... [2022-11-03 02:21:40,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:21:40,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:21:41,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2022-11-03 02:21:41,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:41,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:21:41,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2022-11-03 02:21:41,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:21:41,704 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:21:41,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41 WrapperNode [2022-11-03 02:21:41,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:21:41,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:41,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:21:41,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:21:41,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,777 INFO L138 Inliner]: procedures = 271, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 336 [2022-11-03 02:21:41,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:21:41,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:21:41,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:21:41,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:21:41,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:21:41,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:21:41,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:21:41,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:21:41,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (1/1) ... [2022-11-03 02:21:41,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:21:41,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:41,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:21:41,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:21:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:21:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:21:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:21:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:21:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 02:21:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:21:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-03 02:21:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-03 02:21:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:21:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:21:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:21:41,936 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:21:42,080 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:21:42,082 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:21:42,852 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:21:42,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:21:42,864 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-03 02:21:42,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:42 BoogieIcfgContainer [2022-11-03 02:21:42,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:21:42,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:21:42,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:21:42,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:21:42,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:21:40" (1/3) ... [2022-11-03 02:21:42,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559c3050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:42, skipping insertion in model container [2022-11-03 02:21:42,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:21:41" (2/3) ... [2022-11-03 02:21:42,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559c3050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:21:42, skipping insertion in model container [2022-11-03 02:21:42,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:21:42" (3/3) ... [2022-11-03 02:21:42,884 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2022-11-03 02:21:42,895 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:21:42,907 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:21:42,908 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-03 02:21:42,908 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:21:43,039 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-03 02:21:43,080 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:21:43,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 357 transitions, 722 flow [2022-11-03 02:21:43,099 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 357 transitions, 722 flow [2022-11-03 02:21:43,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 357 transitions, 722 flow [2022-11-03 02:21:43,307 INFO L130 PetriNetUnfolder]: 73/565 cut-off events. [2022-11-03 02:21:43,307 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-03 02:21:43,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 565 events. 73/565 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3028 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 317. Up to 8 conditions per place. [2022-11-03 02:21:43,346 INFO L118 LiptonReduction]: Number of co-enabled transitions 44512 [2022-11-03 02:21:52,883 INFO L133 LiptonReduction]: Checked pairs total: 362052 [2022-11-03 02:21:52,884 INFO L135 LiptonReduction]: Total number of compositions: 294 [2022-11-03 02:21:52,894 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 159 places, 195 transitions, 398 flow [2022-11-03 02:21:53,046 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5250 states, 5155 states have (on average 2.4845780795344328) internal successors, (12808), 5249 states have internal predecessors, (12808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:53,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:21:53,085 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e37d3a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:21:53,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-03 02:21:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 5250 states, 5155 states have (on average 2.4845780795344328) internal successors, (12808), 5249 states have internal predecessors, (12808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:21:53,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:53,110 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 02:21:53,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-03 02:21:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:53,120 INFO L85 PathProgramCache]: Analyzing trace with hash 399441221, now seen corresponding path program 1 times [2022-11-03 02:21:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:53,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721517012] [2022-11-03 02:21:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:53,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:21:53,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721517012] [2022-11-03 02:21:53,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721517012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:53,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:53,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:21:53,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522760260] [2022-11-03 02:21:53,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:53,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:21:53,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:53,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:21:53,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:21:53,481 INFO L87 Difference]: Start difference. First operand has 5250 states, 5155 states have (on average 2.4845780795344328) internal successors, (12808), 5249 states have internal predecessors, (12808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:53,679 INFO L93 Difference]: Finished difference Result 5251 states and 10604 transitions. [2022-11-03 02:21:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:21:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:21:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:53,720 INFO L225 Difference]: With dead ends: 5251 [2022-11-03 02:21:53,721 INFO L226 Difference]: Without dead ends: 5249 [2022-11-03 02:21:53,722 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:21:53,725 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:53,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:21:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5249 states. [2022-11-03 02:21:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5249 to 5249. [2022-11-03 02:21:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5156 states have (on average 2.0560512024825446) internal successors, (10601), 5248 states have internal predecessors, (10601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 10601 transitions. [2022-11-03 02:21:53,986 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 10601 transitions. Word has length 7 [2022-11-03 02:21:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:53,986 INFO L495 AbstractCegarLoop]: Abstraction has 5249 states and 10601 transitions. [2022-11-03 02:21:53,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 10601 transitions. [2022-11-03 02:21:53,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:21:53,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:53,987 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:53,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:21:53,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-03 02:21:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1362964198, now seen corresponding path program 1 times [2022-11-03 02:21:53,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:53,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324099136] [2022-11-03 02:21:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:53,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:21:54,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:54,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324099136] [2022-11-03 02:21:54,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324099136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:54,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735365061] [2022-11-03 02:21:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:54,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:54,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:54,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:54,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:21:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:54,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:21:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:21:54,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:21:54,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735365061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:54,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [801355036] [2022-11-03 02:21:54,361 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:21:54,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:21:54,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:21:54,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396799902] [2022-11-03 02:21:54,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:21:54,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:21:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:54,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:21:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:54,367 INFO L87 Difference]: Start difference. First operand 5249 states and 10601 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:54,582 INFO L93 Difference]: Finished difference Result 5252 states and 10604 transitions. [2022-11-03 02:21:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:21:54,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:21:54,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:54,607 INFO L225 Difference]: With dead ends: 5252 [2022-11-03 02:21:54,607 INFO L226 Difference]: Without dead ends: 5252 [2022-11-03 02:21:54,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:54,613 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:54,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2022-11-03 02:21:54,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 5252. [2022-11-03 02:21:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5159 states have (on average 2.0554371002132195) internal successors, (10604), 5251 states have internal predecessors, (10604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 10604 transitions. [2022-11-03 02:21:54,902 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 10604 transitions. Word has length 8 [2022-11-03 02:21:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:54,903 INFO L495 AbstractCegarLoop]: Abstraction has 5252 states and 10604 transitions. [2022-11-03 02:21:54,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 10604 transitions. [2022-11-03 02:21:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:21:54,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:54,906 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-03 02:21:54,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:55,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 02:21:55,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-03 02:21:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash 537905797, now seen corresponding path program 2 times [2022-11-03 02:21:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:55,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015960072] [2022-11-03 02:21:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:55,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:21:55,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:55,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015960072] [2022-11-03 02:21:55,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015960072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:21:55,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692966050] [2022-11-03 02:21:55,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:21:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:21:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:21:55,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:21:55,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:21:55,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:21:55,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:21:55,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:21:55,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:21:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:21:55,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:21:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:21:55,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692966050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:21:55,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [334184110] [2022-11-03 02:21:55,549 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:21:55,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:21:55,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 02:21:55,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986772478] [2022-11-03 02:21:55,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:21:55,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:21:55,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:21:55,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:21:55,555 INFO L87 Difference]: Start difference. First operand 5252 states and 10604 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:55,812 INFO L93 Difference]: Finished difference Result 5258 states and 10610 transitions. [2022-11-03 02:21:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:21:55,813 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:21:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:55,839 INFO L225 Difference]: With dead ends: 5258 [2022-11-03 02:21:55,839 INFO L226 Difference]: Without dead ends: 5258 [2022-11-03 02:21:55,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:21:55,841 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:55,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 396 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:21:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2022-11-03 02:21:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5258. [2022-11-03 02:21:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5165 states have (on average 2.054211035818006) internal successors, (10610), 5257 states have internal predecessors, (10610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 10610 transitions. [2022-11-03 02:21:56,049 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 10610 transitions. Word has length 11 [2022-11-03 02:21:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:56,050 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 10610 transitions. [2022-11-03 02:21:56,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 10610 transitions. [2022-11-03 02:21:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:21:56,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:56,053 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-03 02:21:56,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:21:56,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-03 02:21:56,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-03 02:21:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1624101477, now seen corresponding path program 3 times [2022-11-03 02:21:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:56,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473676507] [2022-11-03 02:21:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:56,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:21:56,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:21:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:21:56,388 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:21:56,388 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:21:56,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-03 02:21:56,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-03 02:21:56,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-03 02:21:56,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-03 02:21:56,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-03 02:21:56,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-03 02:21:56,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-03 02:21:56,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-03 02:21:56,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-03 02:21:56,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-03 02:21:56,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-03 02:21:56,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-03 02:21:56,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-03 02:21:56,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-03 02:21:56,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-03 02:21:56,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-03 02:21:56,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-03 02:21:56,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-03 02:21:56,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-03 02:21:56,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-03 02:21:56,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-03 02:21:56,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-03 02:21:56,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:21:56,416 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-03 02:21:56,418 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:21:56,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 02:21:56,469 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 02:21:56,565 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:21:56,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 408 places, 463 transitions, 944 flow [2022-11-03 02:21:56,566 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 408 places, 463 transitions, 944 flow [2022-11-03 02:21:56,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 463 transitions, 944 flow [2022-11-03 02:21:56,772 INFO L130 PetriNetUnfolder]: 118/910 cut-off events. [2022-11-03 02:21:56,773 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-03 02:21:56,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 910 events. 118/910 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5711 event pairs, 0 based on Foata normal form. 0/744 useless extension candidates. Maximal degree in co-relation 567. Up to 12 conditions per place. [2022-11-03 02:21:56,843 INFO L118 LiptonReduction]: Number of co-enabled transitions 112944 [2022-11-03 02:22:10,953 INFO L133 LiptonReduction]: Checked pairs total: 950603 [2022-11-03 02:22:10,953 INFO L135 LiptonReduction]: Total number of compositions: 385 [2022-11-03 02:22:10,955 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 210 places, 257 transitions, 532 flow [2022-11-03 02:22:17,592 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 249994 states, 249395 states have (on average 3.664516129032258) internal successors, (913912), 249993 states have internal predecessors, (913912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:17,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:22:17,596 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e37d3a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:22:17,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-03 02:22:17,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 249994 states, 249395 states have (on average 3.664516129032258) internal successors, (913912), 249993 states have internal predecessors, (913912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:17,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:22:17,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:17,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:17,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-03 02:22:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:17,943 INFO L85 PathProgramCache]: Analyzing trace with hash -73194958, now seen corresponding path program 1 times [2022-11-03 02:22:17,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:17,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094088136] [2022-11-03 02:22:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:17,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:18,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094088136] [2022-11-03 02:22:18,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094088136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:18,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:18,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:22:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536308031] [2022-11-03 02:22:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:22:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:22:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:22:18,405 INFO L87 Difference]: Start difference. First operand has 249994 states, 249395 states have (on average 3.664516129032258) internal successors, (913912), 249993 states have internal predecessors, (913912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:22,565 INFO L93 Difference]: Finished difference Result 249995 states and 759207 transitions. [2022-11-03 02:22:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:22:22,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:22:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:24,744 INFO L225 Difference]: With dead ends: 249995 [2022-11-03 02:22:24,744 INFO L226 Difference]: Without dead ends: 249991 [2022-11-03 02:22:24,744 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:22:24,745 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:24,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:22:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249991 states. [2022-11-03 02:22:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249991 to 249991. [2022-11-03 02:22:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249991 states, 249396 states have (on average 3.0441506680139216) internal successors, (759199), 249990 states have internal predecessors, (759199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249991 states to 249991 states and 759199 transitions. [2022-11-03 02:22:34,879 INFO L78 Accepts]: Start accepts. Automaton has 249991 states and 759199 transitions. Word has length 11 [2022-11-03 02:22:34,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:34,879 INFO L495 AbstractCegarLoop]: Abstraction has 249991 states and 759199 transitions. [2022-11-03 02:22:34,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:34,879 INFO L276 IsEmpty]: Start isEmpty. Operand 249991 states and 759199 transitions. [2022-11-03 02:22:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:22:34,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:34,881 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:34,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:22:34,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-03 02:22:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1244250982, now seen corresponding path program 1 times [2022-11-03 02:22:34,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:34,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871215889] [2022-11-03 02:22:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:34,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:22:34,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:34,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871215889] [2022-11-03 02:22:34,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871215889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:34,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870582546] [2022-11-03 02:22:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:34,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:34,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:34,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:34,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:22:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:35,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:22:35,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:22:35,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:22:35,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870582546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1247681396] [2022-11-03 02:22:35,112 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:22:35,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:22:35,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:22:35,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498564648] [2022-11-03 02:22:35,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:35,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:22:35,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:22:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:22:35,118 INFO L87 Difference]: Start difference. First operand 249991 states and 759199 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:38,346 INFO L93 Difference]: Finished difference Result 249994 states and 759202 transitions. [2022-11-03 02:22:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:22:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 02:22:38,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:39,763 INFO L225 Difference]: With dead ends: 249994 [2022-11-03 02:22:39,763 INFO L226 Difference]: Without dead ends: 249994 [2022-11-03 02:22:39,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:22:39,765 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:39,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:22:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249994 states. [2022-11-03 02:22:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249994 to 249994. [2022-11-03 02:22:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249994 states, 249399 states have (on average 3.0441260790941422) internal successors, (759202), 249993 states have internal predecessors, (759202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249994 states to 249994 states and 759202 transitions. [2022-11-03 02:22:49,718 INFO L78 Accepts]: Start accepts. Automaton has 249994 states and 759202 transitions. Word has length 13 [2022-11-03 02:22:49,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:49,721 INFO L495 AbstractCegarLoop]: Abstraction has 249994 states and 759202 transitions. [2022-11-03 02:22:49,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 249994 states and 759202 transitions. [2022-11-03 02:22:49,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:22:49,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:49,725 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:22:49,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:22:49,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:49,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-03 02:22:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:49,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2023521523, now seen corresponding path program 2 times [2022-11-03 02:22:49,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:49,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723115288] [2022-11-03 02:22:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:49,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:22:50,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:50,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723115288] [2022-11-03 02:22:50,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723115288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:22:50,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264334827] [2022-11-03 02:22:50,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:22:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:22:50,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:22:50,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:22:50,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3dceb1-caa5-4682-9331-e6a67ad2bc4d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:22:50,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 02:22:50,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:22:50,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:22:50,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:22:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:22:50,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:22:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:22:50,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264334827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:22:50,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010713684] [2022-11-03 02:22:50,269 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:22:50,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:22:50,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 02:22:50,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301333807] [2022-11-03 02:22:50,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:22:50,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:22:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:22:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:22:50,273 INFO L87 Difference]: Start difference. First operand 249994 states and 759202 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:53,056 INFO L93 Difference]: Finished difference Result 250000 states and 759208 transitions. [2022-11-03 02:22:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:22:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 02:22:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:54,385 INFO L225 Difference]: With dead ends: 250000 [2022-11-03 02:22:54,385 INFO L226 Difference]: Without dead ends: 250000 [2022-11-03 02:22:54,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:22:54,386 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:54,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 780 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]