./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9 --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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- 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-6b4ec56 [2022-11-20 20:53:11,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:53:11,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:53:11,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:53:11,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:53:11,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:53:11,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:53:11,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:53:11,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:53:11,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:53:11,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:53:11,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:53:11,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:53:11,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:53:11,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:53:11,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:53:11,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:53:11,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:53:11,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:53:11,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:53:11,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:53:11,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:53:11,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:53:11,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:53:11,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:53:11,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:53:11,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:53:11,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:53:11,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:53:11,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:53:11,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:53:11,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:53:11,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:53:11,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:53:11,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:53:11,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:53:11,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:53:11,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:53:11,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:53:11,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:53:11,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:53:11,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-20 20:53:11,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:53:11,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:53:11,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:53:11,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:53:11,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:53:11,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:53:11,487 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:53:11,488 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:53:11,488 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:53:11,488 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:53:11,490 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:53:11,490 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:53:11,490 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:53:11,491 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:53:11,491 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:53:11,491 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:53:11,491 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:53:11,492 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:53:11,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:53:11,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:53:11,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 20:53:11,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:53:11,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:53:11,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:53:11,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:53:11,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:53:11,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:53:11,496 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 20:53:11,496 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:53:11,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:53:11,497 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:53:11,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:53:11,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:53:11,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:53:11,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:53:11,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:53:11,499 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:53:11,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:53:11,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:53:11,500 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:53:11,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:53:11,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:53:11,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:53:11,501 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_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2022-11-20 20:53:11,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:53:11,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:53:11,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:53:11,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:53:11,900 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:53:11,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2022-11-20 20:53:15,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:53:15,918 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:53:15,919 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2022-11-20 20:53:15,934 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/data/878312676/0007c02fe4224f9d9c482fb684c55a21/FLAG1c1dc6e05 [2022-11-20 20:53:15,952 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/data/878312676/0007c02fe4224f9d9c482fb684c55a21 [2022-11-20 20:53:15,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:53:15,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:53:15,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:53:15,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:53:15,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:53:15,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:53:15" (1/1) ... [2022-11-20 20:53:15,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31703c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:15, skipping insertion in model container [2022-11-20 20:53:15,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:53:15" (1/1) ... [2022-11-20 20:53:15,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:53:16,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:53:16,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:53:16,683 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:53:16,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:53:16,803 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:53:16,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16 WrapperNode [2022-11-20 20:53:16,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:53:16,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:53:16,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:53:16,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:53:16,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,874 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-11-20 20:53:16,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:53:16,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:53:16,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:53:16,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:53:16,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:53:16,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:53:16,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:53:16,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:53:16,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (1/1) ... [2022-11-20 20:53:16,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:53:16,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:53:16,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:53:17,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:53:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:53:17,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:53:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:53:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:53:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 20:53:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:53:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 20:53:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 20:53:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:53:17,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:53:17,076 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 20:53:17,342 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:53:17,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:53:17,695 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:53:17,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:53:17,718 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:53:17,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:53:17 BoogieIcfgContainer [2022-11-20 20:53:17,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:53:17,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:53:17,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:53:17,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:53:17,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:53:15" (1/3) ... [2022-11-20 20:53:17,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453a4642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:53:17, skipping insertion in model container [2022-11-20 20:53:17,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:53:16" (2/3) ... [2022-11-20 20:53:17,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453a4642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:53:17, skipping insertion in model container [2022-11-20 20:53:17,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:53:17" (3/3) ... [2022-11-20 20:53:17,736 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2022-11-20 20:53:17,747 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 20:53:17,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:53:17,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 20:53:17,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 20:53:17,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 20:53:17,926 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 20:53:17,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 103 transitions, 211 flow [2022-11-20 20:53:17,980 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 103 transitions, 211 flow [2022-11-20 20:53:17,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 211 flow [2022-11-20 20:53:18,098 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-11-20 20:53:18,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 20:53:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 4/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-20 20:53:18,111 INFO L119 LiptonReduction]: Number of co-enabled transitions 2220 [2022-11-20 20:53:21,429 INFO L134 LiptonReduction]: Checked pairs total: 10982 [2022-11-20 20:53:21,429 INFO L136 LiptonReduction]: Total number of compositions: 83 [2022-11-20 20:53:21,441 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 38 transitions, 81 flow [2022-11-20 20:53:21,505 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 288 states, 280 states have (on average 1.9892857142857143) internal successors, (557), 287 states have internal predecessors, (557), 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) [2022-11-20 20:53:21,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:53:21,543 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;@7b5ba2b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:53:21,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 20:53:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 280 states have (on average 1.9892857142857143) internal successors, (557), 287 states have internal predecessors, (557), 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) [2022-11-20 20:53:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 20:53:21,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:21,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 20:53:21,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash 351229499, now seen corresponding path program 1 times [2022-11-20 20:53:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940209366] [2022-11-20 20:53:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:21,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:21,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940209366] [2022-11-20 20:53:21,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940209366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:21,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:21,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:53:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942281631] [2022-11-20 20:53:21,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:53:21,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:22,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:53:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:53:22,025 INFO L87 Difference]: Start difference. First operand has 288 states, 280 states have (on average 1.9892857142857143) internal successors, (557), 287 states have internal predecessors, (557), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 20:53:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:22,131 INFO L93 Difference]: Finished difference Result 289 states and 541 transitions. [2022-11-20 20:53:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:53:22,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-20 20:53:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:22,159 INFO L225 Difference]: With dead ends: 289 [2022-11-20 20:53:22,159 INFO L226 Difference]: Without dead ends: 289 [2022-11-20 20:53:22,160 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 [2022-11-20 20:53:22,167 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:22,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:53:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-20 20:53:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-11-20 20:53:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 281 states have (on average 1.9252669039145907) internal successors, (541), 288 states have internal predecessors, (541), 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) [2022-11-20 20:53:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 541 transitions. [2022-11-20 20:53:22,278 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 541 transitions. Word has length 5 [2022-11-20 20:53:22,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:22,279 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 541 transitions. [2022-11-20 20:53:22,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 20:53:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 541 transitions. [2022-11-20 20:53:22,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:53:22,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:22,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:22,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:53:22,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash -17925749, now seen corresponding path program 1 times [2022-11-20 20:53:22,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:22,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392120107] [2022-11-20 20:53:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:22,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:22,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:22,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392120107] [2022-11-20 20:53:22,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392120107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:53:22,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676725015] [2022-11-20 20:53:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:22,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:53:22,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:53:22,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:53:22,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:53:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:22,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:53:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:53:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:22,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:53:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:22,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676725015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:53:22,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1290963099] [2022-11-20 20:53:22,753 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) [2022-11-20 20:53:22,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:53:22,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-20 20:53:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544733185] [2022-11-20 20:53:22,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:53:22,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:53:22,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:53:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:53:22,759 INFO L87 Difference]: Start difference. First operand 289 states and 541 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 20:53:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:22,841 INFO L93 Difference]: Finished difference Result 292 states and 544 transitions. [2022-11-20 20:53:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:53:22,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 [2022-11-20 20:53:22,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:22,855 INFO L225 Difference]: With dead ends: 292 [2022-11-20 20:53:22,855 INFO L226 Difference]: Without dead ends: 292 [2022-11-20 20:53:22,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:53:22,857 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:22,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:53:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-20 20:53:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-11-20 20:53:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 284 states have (on average 1.9154929577464788) internal successors, (544), 291 states have internal predecessors, (544), 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) [2022-11-20 20:53:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 544 transitions. [2022-11-20 20:53:22,884 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 544 transitions. Word has length 11 [2022-11-20 20:53:22,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:22,885 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 544 transitions. [2022-11-20 20:53:22,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 20:53:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 544 transitions. [2022-11-20 20:53:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:53:22,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:22,888 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:22,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:53:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:53:23,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1184193064, now seen corresponding path program 2 times [2022-11-20 20:53:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:23,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015998296] [2022-11-20 20:53:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:23,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:53:23,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:23,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015998296] [2022-11-20 20:53:23,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015998296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:23,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:23,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:53:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027750523] [2022-11-20 20:53:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:23,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:53:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:53:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:23,606 INFO L87 Difference]: Start difference. First operand 292 states and 544 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2022-11-20 20:53:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:24,023 INFO L93 Difference]: Finished difference Result 324 states and 602 transitions. [2022-11-20 20:53:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:53:24,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 14 [2022-11-20 20:53:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:24,026 INFO L225 Difference]: With dead ends: 324 [2022-11-20 20:53:24,026 INFO L226 Difference]: Without dead ends: 324 [2022-11-20 20:53:24,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:24,027 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:24,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 16 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:53:24,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-20 20:53:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 310. [2022-11-20 20:53:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 303 states have (on average 1.900990099009901) internal successors, (576), 309 states have internal predecessors, (576), 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) [2022-11-20 20:53:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 576 transitions. [2022-11-20 20:53:24,043 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 576 transitions. Word has length 14 [2022-11-20 20:53:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:24,043 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 576 transitions. [2022-11-20 20:53:24,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2022-11-20 20:53:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 576 transitions. [2022-11-20 20:53:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:53:24,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:24,045 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:24,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:53:24,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash 719757177, now seen corresponding path program 1 times [2022-11-20 20:53:24,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:24,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178185412] [2022-11-20 20:53:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:24,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 20:53:24,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178185412] [2022-11-20 20:53:24,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178185412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:24,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:24,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:53:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605702821] [2022-11-20 20:53:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:24,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:53:24,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:53:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:24,352 INFO L87 Difference]: Start difference. First operand 310 states and 576 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2022-11-20 20:53:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:24,637 INFO L93 Difference]: Finished difference Result 343 states and 636 transitions. [2022-11-20 20:53:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:53:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 14 [2022-11-20 20:53:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:24,640 INFO L225 Difference]: With dead ends: 343 [2022-11-20 20:53:24,640 INFO L226 Difference]: Without dead ends: 343 [2022-11-20 20:53:24,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:24,642 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:24,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 16 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:53:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-20 20:53:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 329. [2022-11-20 20:53:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 322 states have (on average 1.8944099378881987) internal successors, (610), 328 states have internal predecessors, (610), 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) [2022-11-20 20:53:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 610 transitions. [2022-11-20 20:53:24,662 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 610 transitions. Word has length 14 [2022-11-20 20:53:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:24,665 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 610 transitions. [2022-11-20 20:53:24,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2022-11-20 20:53:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 610 transitions. [2022-11-20 20:53:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 20:53:24,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:24,670 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:24,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:53:24,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1845078780, now seen corresponding path program 1 times [2022-11-20 20:53:24,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589254898] [2022-11-20 20:53:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:24,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:24,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589254898] [2022-11-20 20:53:24,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589254898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:53:24,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304454846] [2022-11-20 20:53:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:24,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:53:24,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:53:24,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:53:24,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:53:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:24,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:53:24,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:53:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:25,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:53:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:25,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304454846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:53:25,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [310613130] [2022-11-20 20:53:25,115 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) [2022-11-20 20:53:25,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:53:25,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-20 20:53:25,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018499106] [2022-11-20 20:53:25,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:53:25,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:53:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:25,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:53:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:53:25,121 INFO L87 Difference]: Start difference. First operand 329 states and 610 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2022-11-20 20:53:25,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:25,176 INFO L93 Difference]: Finished difference Result 335 states and 616 transitions. [2022-11-20 20:53:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:53:25,177 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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 20 [2022-11-20 20:53:25,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:25,179 INFO L225 Difference]: With dead ends: 335 [2022-11-20 20:53:25,179 INFO L226 Difference]: Without dead ends: 335 [2022-11-20 20:53:25,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:53:25,182 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:25,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:53:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-20 20:53:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-11-20 20:53:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 328 states have (on average 1.8780487804878048) internal successors, (616), 334 states have internal predecessors, (616), 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) [2022-11-20 20:53:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 616 transitions. [2022-11-20 20:53:25,200 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 616 transitions. Word has length 20 [2022-11-20 20:53:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:25,201 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 616 transitions. [2022-11-20 20:53:25,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2022-11-20 20:53:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 616 transitions. [2022-11-20 20:53:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 20:53:25,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:25,210 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:25,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 20:53:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:53:25,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2083016156, now seen corresponding path program 2 times [2022-11-20 20:53:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014842790] [2022-11-20 20:53:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:25,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:25,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:25,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014842790] [2022-11-20 20:53:25,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014842790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:25,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:25,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:53:25,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074265215] [2022-11-20 20:53:25,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:25,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:53:25,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:53:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:25,877 INFO L87 Difference]: Start difference. First operand 335 states and 616 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-20 20:53:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:26,223 INFO L93 Difference]: Finished difference Result 387 states and 714 transitions. [2022-11-20 20:53:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:53:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 26 [2022-11-20 20:53:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:26,227 INFO L225 Difference]: With dead ends: 387 [2022-11-20 20:53:26,227 INFO L226 Difference]: Without dead ends: 361 [2022-11-20 20:53:26,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:26,228 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:26,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 16 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:53:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-20 20:53:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-11-20 20:53:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 354 states have (on average 1.8700564971751412) internal successors, (662), 360 states have internal predecessors, (662), 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) [2022-11-20 20:53:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 662 transitions. [2022-11-20 20:53:26,250 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 662 transitions. Word has length 26 [2022-11-20 20:53:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:26,251 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 662 transitions. [2022-11-20 20:53:26,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-20 20:53:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 662 transitions. [2022-11-20 20:53:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 20:53:26,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:26,253 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:26,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:53:26,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:26,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1130374452, now seen corresponding path program 1 times [2022-11-20 20:53:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:26,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139312962] [2022-11-20 20:53:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:26,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:26,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139312962] [2022-11-20 20:53:26,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139312962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:26,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:26,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:53:26,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013803213] [2022-11-20 20:53:26,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:26,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:53:26,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:53:26,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:26,696 INFO L87 Difference]: Start difference. First operand 361 states and 662 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-20 20:53:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:27,027 INFO L93 Difference]: Finished difference Result 420 states and 770 transitions. [2022-11-20 20:53:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:53:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 26 [2022-11-20 20:53:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:27,030 INFO L225 Difference]: With dead ends: 420 [2022-11-20 20:53:27,031 INFO L226 Difference]: Without dead ends: 394 [2022-11-20 20:53:27,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:53:27,032 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:27,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 16 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:53:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-20 20:53:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 386. [2022-11-20 20:53:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 379 states have (on average 1.8522427440633245) internal successors, (702), 385 states have internal predecessors, (702), 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) [2022-11-20 20:53:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 702 transitions. [2022-11-20 20:53:27,047 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 702 transitions. Word has length 26 [2022-11-20 20:53:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:27,048 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 702 transitions. [2022-11-20 20:53:27,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-20 20:53:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 702 transitions. [2022-11-20 20:53:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:27,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:27,050 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:27,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:53:27,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:27,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash 958653847, now seen corresponding path program 1 times [2022-11-20 20:53:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:27,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771792392] [2022-11-20 20:53:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:28,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:28,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771792392] [2022-11-20 20:53:28,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771792392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:28,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:28,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:53:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456702532] [2022-11-20 20:53:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:53:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:53:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:53:28,181 INFO L87 Difference]: Start difference. First operand 386 states and 702 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:28,861 INFO L93 Difference]: Finished difference Result 756 states and 1382 transitions. [2022-11-20 20:53:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:53:28,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:53:28,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:28,866 INFO L225 Difference]: With dead ends: 756 [2022-11-20 20:53:28,866 INFO L226 Difference]: Without dead ends: 756 [2022-11-20 20:53:28,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:53:28,867 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 107 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:28,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 16 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:53:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-11-20 20:53:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 478. [2022-11-20 20:53:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 471 states have (on average 1.8768577494692145) internal successors, (884), 477 states have internal predecessors, (884), 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) [2022-11-20 20:53:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 884 transitions. [2022-11-20 20:53:28,888 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 884 transitions. Word has length 29 [2022-11-20 20:53:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:28,891 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 884 transitions. [2022-11-20 20:53:28,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 884 transitions. [2022-11-20 20:53:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:28,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:28,894 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:28,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:53:28,898 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:28,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1314945151, now seen corresponding path program 1 times [2022-11-20 20:53:28,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:28,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705074839] [2022-11-20 20:53:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:28,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:53:36,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:36,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705074839] [2022-11-20 20:53:36,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705074839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:53:36,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567150992] [2022-11-20 20:53:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:36,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:53:36,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:53:36,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:53:36,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:53:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:36,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 20:53:36,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:53:36,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 20:53:36,842 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:53:36,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:53:36,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 20:53:37,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 20:53:37,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 20:53:37,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 20:53:37,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:53:37,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:53:37,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:53:37,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:53:37,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:53:37,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2022-11-20 20:53:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:53:37,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:53:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:39,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567150992] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:53:39,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:53:39,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18, 16] total 39 [2022-11-20 20:53:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285510697] [2022-11-20 20:53:39,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:39,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:53:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:53:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 20:53:39,214 INFO L87 Difference]: Start difference. First operand 478 states and 884 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:40,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:40,143 INFO L93 Difference]: Finished difference Result 919 states and 1739 transitions. [2022-11-20 20:53:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:53:40,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:53:40,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:40,148 INFO L225 Difference]: With dead ends: 919 [2022-11-20 20:53:40,148 INFO L226 Difference]: Without dead ends: 919 [2022-11-20 20:53:40,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=198, Invalid=1782, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 20:53:40,150 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:40,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 25 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 249 Invalid, 0 Unknown, 170 Unchecked, 0.3s Time] [2022-11-20 20:53:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-11-20 20:53:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 491. [2022-11-20 20:53:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 484 states have (on average 1.8801652892561984) internal successors, (910), 490 states have internal predecessors, (910), 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) [2022-11-20 20:53:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 910 transitions. [2022-11-20 20:53:40,169 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 910 transitions. Word has length 29 [2022-11-20 20:53:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:40,170 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 910 transitions. [2022-11-20 20:53:40,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 910 transitions. [2022-11-20 20:53:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:40,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:40,171 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:40,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:53:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:53:40,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1314989791, now seen corresponding path program 2 times [2022-11-20 20:53:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:40,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461241824] [2022-11-20 20:53:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:41,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:41,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461241824] [2022-11-20 20:53:41,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461241824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:41,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:41,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:53:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883256204] [2022-11-20 20:53:41,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:41,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:53:41,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:41,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:53:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:53:41,074 INFO L87 Difference]: Start difference. First operand 491 states and 910 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:41,857 INFO L93 Difference]: Finished difference Result 794 states and 1450 transitions. [2022-11-20 20:53:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:53:41,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:53:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:41,862 INFO L225 Difference]: With dead ends: 794 [2022-11-20 20:53:41,863 INFO L226 Difference]: Without dead ends: 794 [2022-11-20 20:53:41,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:53:41,864 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:41,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 14 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:53:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-11-20 20:53:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 493. [2022-11-20 20:53:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 486 states have (on average 1.8806584362139918) internal successors, (914), 492 states have internal predecessors, (914), 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) [2022-11-20 20:53:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 914 transitions. [2022-11-20 20:53:41,884 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 914 transitions. Word has length 29 [2022-11-20 20:53:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:41,885 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 914 transitions. [2022-11-20 20:53:41,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 914 transitions. [2022-11-20 20:53:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:41,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:41,887 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:41,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:53:41,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1207630633, now seen corresponding path program 3 times [2022-11-20 20:53:41,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:41,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590323561] [2022-11-20 20:53:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:42,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:42,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590323561] [2022-11-20 20:53:42,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590323561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:42,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:42,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:53:42,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830124289] [2022-11-20 20:53:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:42,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:53:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:53:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:53:42,710 INFO L87 Difference]: Start difference. First operand 493 states and 914 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:43,528 INFO L93 Difference]: Finished difference Result 787 states and 1436 transitions. [2022-11-20 20:53:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:53:43,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:53:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:43,533 INFO L225 Difference]: With dead ends: 787 [2022-11-20 20:53:43,533 INFO L226 Difference]: Without dead ends: 787 [2022-11-20 20:53:43,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:53:43,534 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 116 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:43,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 15 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:53:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-20 20:53:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 480. [2022-11-20 20:53:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 473 states have (on average 1.8752642706131077) internal successors, (887), 479 states have internal predecessors, (887), 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) [2022-11-20 20:53:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 887 transitions. [2022-11-20 20:53:43,553 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 887 transitions. Word has length 29 [2022-11-20 20:53:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:43,554 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 887 transitions. [2022-11-20 20:53:43,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:43,554 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 887 transitions. [2022-11-20 20:53:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:43,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:43,555 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:43,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 20:53:43,556 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash 429030484, now seen corresponding path program 1 times [2022-11-20 20:53:43,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:43,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351685663] [2022-11-20 20:53:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:45,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:45,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351685663] [2022-11-20 20:53:45,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351685663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:45,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:45,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:53:45,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168714892] [2022-11-20 20:53:45,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:53:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:45,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:53:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:53:45,539 INFO L87 Difference]: Start difference. First operand 480 states and 887 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:53:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:47,031 INFO L93 Difference]: Finished difference Result 866 states and 1587 transitions. [2022-11-20 20:53:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:53:47,031 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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 29 [2022-11-20 20:53:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:47,036 INFO L225 Difference]: With dead ends: 866 [2022-11-20 20:53:47,036 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 20:53:47,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:53:47,037 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 130 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:47,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 17 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:53:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 20:53:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 509. [2022-11-20 20:53:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 502 states have (on average 1.8824701195219125) internal successors, (945), 508 states have internal predecessors, (945), 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) [2022-11-20 20:53:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 945 transitions. [2022-11-20 20:53:47,058 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 945 transitions. Word has length 29 [2022-11-20 20:53:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:47,059 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 945 transitions. [2022-11-20 20:53:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:53:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 945 transitions. [2022-11-20 20:53:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:47,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:47,061 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:47,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 20:53:47,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1529915342, now seen corresponding path program 2 times [2022-11-20 20:53:47,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:47,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622611979] [2022-11-20 20:53:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:47,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:48,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:48,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622611979] [2022-11-20 20:53:48,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622611979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:48,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:48,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:53:48,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566228601] [2022-11-20 20:53:48,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:48,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:53:48,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:53:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:53:48,868 INFO L87 Difference]: Start difference. First operand 509 states and 945 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2022-11-20 20:53:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:50,265 INFO L93 Difference]: Finished difference Result 874 states and 1603 transitions. [2022-11-20 20:53:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:53:50,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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 29 [2022-11-20 20:53:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:50,270 INFO L225 Difference]: With dead ends: 874 [2022-11-20 20:53:50,271 INFO L226 Difference]: Without dead ends: 874 [2022-11-20 20:53:50,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:53:50,272 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 126 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:50,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 17 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 20:53:50,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2022-11-20 20:53:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 516. [2022-11-20 20:53:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 509 states have (on average 1.8840864440078586) internal successors, (959), 515 states have internal predecessors, (959), 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) [2022-11-20 20:53:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 959 transitions. [2022-11-20 20:53:50,293 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 959 transitions. Word has length 29 [2022-11-20 20:53:50,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:50,294 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 959 transitions. [2022-11-20 20:53:50,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2022-11-20 20:53:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 959 transitions. [2022-11-20 20:53:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:50,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:50,296 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:50,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 20:53:50,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash 243667476, now seen corresponding path program 3 times [2022-11-20 20:53:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:50,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619616670] [2022-11-20 20:53:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:50,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:51,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:51,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619616670] [2022-11-20 20:53:51,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619616670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:51,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:51,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:53:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044549936] [2022-11-20 20:53:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:53:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:53:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:53:51,426 INFO L87 Difference]: Start difference. First operand 516 states and 959 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:52,394 INFO L93 Difference]: Finished difference Result 898 states and 1641 transitions. [2022-11-20 20:53:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:53:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:53:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:52,399 INFO L225 Difference]: With dead ends: 898 [2022-11-20 20:53:52,400 INFO L226 Difference]: Without dead ends: 890 [2022-11-20 20:53:52,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:53:52,401 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 138 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:52,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 17 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:53:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-11-20 20:53:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 545. [2022-11-20 20:53:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.8866171003717471) internal successors, (1015), 544 states have internal predecessors, (1015), 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) [2022-11-20 20:53:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1015 transitions. [2022-11-20 20:53:52,423 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1015 transitions. Word has length 29 [2022-11-20 20:53:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:52,424 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 1015 transitions. [2022-11-20 20:53:52,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1015 transitions. [2022-11-20 20:53:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:52,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:52,426 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:52,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 20:53:52,426 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:52,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash 240853296, now seen corresponding path program 4 times [2022-11-20 20:53:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806728426] [2022-11-20 20:53:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:54,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:54,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806728426] [2022-11-20 20:53:54,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806728426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:54,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:54,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:53:54,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770218851] [2022-11-20 20:53:54,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:54,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:53:54,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:53:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:53:54,480 INFO L87 Difference]: Start difference. First operand 545 states and 1015 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:53:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:55,765 INFO L93 Difference]: Finished difference Result 876 states and 1607 transitions. [2022-11-20 20:53:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:53:55,766 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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 29 [2022-11-20 20:53:55,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:55,770 INFO L225 Difference]: With dead ends: 876 [2022-11-20 20:53:55,771 INFO L226 Difference]: Without dead ends: 876 [2022-11-20 20:53:55,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:53:55,772 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 115 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:55,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 17 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:53:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-20 20:53:55,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 558. [2022-11-20 20:53:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 551 states have (on average 1.8892921960072595) internal successors, (1041), 557 states have internal predecessors, (1041), 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) [2022-11-20 20:53:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1041 transitions. [2022-11-20 20:53:55,795 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1041 transitions. Word has length 29 [2022-11-20 20:53:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:55,795 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 1041 transitions. [2022-11-20 20:53:55,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:53:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1041 transitions. [2022-11-20 20:53:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:55,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:55,797 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:55,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 20:53:55,798 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:55,799 INFO L85 PathProgramCache]: Analyzing trace with hash 25886978, now seen corresponding path program 5 times [2022-11-20 20:53:55,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:55,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358822170] [2022-11-20 20:53:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:55,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:57,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:57,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358822170] [2022-11-20 20:53:57,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358822170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:57,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:57,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:53:57,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185970683] [2022-11-20 20:53:57,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:53:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:53:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:53:57,478 INFO L87 Difference]: Start difference. First operand 558 states and 1041 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:58,502 INFO L93 Difference]: Finished difference Result 840 states and 1540 transitions. [2022-11-20 20:53:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:53:58,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:53:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:58,507 INFO L225 Difference]: With dead ends: 840 [2022-11-20 20:53:58,507 INFO L226 Difference]: Without dead ends: 836 [2022-11-20 20:53:58,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:53:58,509 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 120 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:58,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 17 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:53:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-20 20:53:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 546. [2022-11-20 20:53:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 539 states have (on average 1.8831168831168832) internal successors, (1015), 545 states have internal predecessors, (1015), 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) [2022-11-20 20:53:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1015 transitions. [2022-11-20 20:53:58,532 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1015 transitions. Word has length 29 [2022-11-20 20:53:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:58,532 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 1015 transitions. [2022-11-20 20:53:58,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1015 transitions. [2022-11-20 20:53:58,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:58,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:58,534 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:58,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 20:53:58,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -669772749, now seen corresponding path program 1 times [2022-11-20 20:53:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:58,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258199221] [2022-11-20 20:53:58,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:53:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:53:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:53:59,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:53:59,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258199221] [2022-11-20 20:53:59,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258199221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:59,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:53:59,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:53:59,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231648850] [2022-11-20 20:53:59,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:59,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:53:59,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:59,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:53:59,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:53:59,120 INFO L87 Difference]: Start difference. First operand 546 states and 1015 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:59,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:53:59,963 INFO L93 Difference]: Finished difference Result 818 states and 1496 transitions. [2022-11-20 20:53:59,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 20:53:59,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:53:59,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:53:59,967 INFO L225 Difference]: With dead ends: 818 [2022-11-20 20:53:59,967 INFO L226 Difference]: Without dead ends: 818 [2022-11-20 20:53:59,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-11-20 20:53:59,968 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 142 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:53:59,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 11 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:53:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-20 20:53:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 548. [2022-11-20 20:53:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 541 states have (on average 1.8853974121996304) internal successors, (1020), 547 states have internal predecessors, (1020), 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) [2022-11-20 20:53:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1020 transitions. [2022-11-20 20:53:59,987 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1020 transitions. Word has length 29 [2022-11-20 20:53:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:53:59,988 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 1020 transitions. [2022-11-20 20:53:59,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:53:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1020 transitions. [2022-11-20 20:53:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:53:59,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:53:59,990 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:53:59,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 20:53:59,990 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:53:59,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:53:59,991 INFO L85 PathProgramCache]: Analyzing trace with hash -636704739, now seen corresponding path program 2 times [2022-11-20 20:53:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:53:59,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605182306] [2022-11-20 20:53:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:53:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:00,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605182306] [2022-11-20 20:54:00,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605182306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:00,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:00,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:54:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693938782] [2022-11-20 20:54:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:00,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:00,501 INFO L87 Difference]: Start difference. First operand 548 states and 1020 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:01,157 INFO L93 Difference]: Finished difference Result 813 states and 1486 transitions. [2022-11-20 20:54:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:54:01,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:01,162 INFO L225 Difference]: With dead ends: 813 [2022-11-20 20:54:01,163 INFO L226 Difference]: Without dead ends: 813 [2022-11-20 20:54:01,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:54:01,164 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 111 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:01,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 17 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:54:01,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-20 20:54:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 551. [2022-11-20 20:54:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 544 states have (on average 1.8878676470588236) internal successors, (1027), 550 states have internal predecessors, (1027), 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) [2022-11-20 20:54:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1027 transitions. [2022-11-20 20:54:01,183 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1027 transitions. Word has length 29 [2022-11-20 20:54:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:01,183 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 1027 transitions. [2022-11-20 20:54:01,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1027 transitions. [2022-11-20 20:54:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:01,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:01,185 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:01,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 20:54:01,185 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:01,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:01,186 INFO L85 PathProgramCache]: Analyzing trace with hash -635609199, now seen corresponding path program 3 times [2022-11-20 20:54:01,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:01,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426109259] [2022-11-20 20:54:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:01,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:03,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426109259] [2022-11-20 20:54:03,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426109259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013602358] [2022-11-20 20:54:03,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:54:03,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:03,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:54:03,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:54:03,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:54:04,096 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:54:04,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:54:04,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 20:54:04,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:54:04,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 20:54:04,371 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:54:04,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:54:04,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 20:54:04,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 20:54:04,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 20:54:04,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:04,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:04,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:54:04,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-11-20 20:54:04,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:54:04,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 20:54:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:54:04,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:54:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:05,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013602358] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:05,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:54:05,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 38 [2022-11-20 20:54:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410425848] [2022-11-20 20:54:05,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:05,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1338, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 20:54:05,873 INFO L87 Difference]: Start difference. First operand 551 states and 1027 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:06,826 INFO L93 Difference]: Finished difference Result 764 states and 1410 transitions. [2022-11-20 20:54:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:54:06,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:06,830 INFO L225 Difference]: With dead ends: 764 [2022-11-20 20:54:06,831 INFO L226 Difference]: Without dead ends: 764 [2022-11-20 20:54:06,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 20:54:06,832 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:06,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 20 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 191 Unchecked, 0.3s Time] [2022-11-20 20:54:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-20 20:54:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 552. [2022-11-20 20:54:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 545 states have (on average 1.888073394495413) internal successors, (1029), 551 states have internal predecessors, (1029), 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) [2022-11-20 20:54:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1029 transitions. [2022-11-20 20:54:06,854 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1029 transitions. Word has length 29 [2022-11-20 20:54:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:06,854 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 1029 transitions. [2022-11-20 20:54:06,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1029 transitions. [2022-11-20 20:54:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:06,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:06,856 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:06,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:54:07,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:07,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:07,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash -635572929, now seen corresponding path program 4 times [2022-11-20 20:54:07,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:07,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378444026] [2022-11-20 20:54:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:07,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:07,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:07,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378444026] [2022-11-20 20:54:07,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378444026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:07,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:07,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:54:07,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397174109] [2022-11-20 20:54:07,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:07,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:07,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:07,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:07,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:07,871 INFO L87 Difference]: Start difference. First operand 552 states and 1029 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:08,811 INFO L93 Difference]: Finished difference Result 806 states and 1473 transitions. [2022-11-20 20:54:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:54:08,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:08,816 INFO L225 Difference]: With dead ends: 806 [2022-11-20 20:54:08,816 INFO L226 Difference]: Without dead ends: 806 [2022-11-20 20:54:08,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:54:08,817 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 98 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:08,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 18 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:54:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-11-20 20:54:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 560. [2022-11-20 20:54:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 553 states have (on average 1.8842676311030742) internal successors, (1042), 559 states have internal predecessors, (1042), 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) [2022-11-20 20:54:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1042 transitions. [2022-11-20 20:54:08,838 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1042 transitions. Word has length 29 [2022-11-20 20:54:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:08,839 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 1042 transitions. [2022-11-20 20:54:08,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1042 transitions. [2022-11-20 20:54:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:08,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:08,840 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:08,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 20:54:08,841 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1138603250, now seen corresponding path program 6 times [2022-11-20 20:54:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694560577] [2022-11-20 20:54:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:10,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694560577] [2022-11-20 20:54:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694560577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:10,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:10,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:54:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665354324] [2022-11-20 20:54:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:10,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:54:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:54:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:54:10,431 INFO L87 Difference]: Start difference. First operand 560 states and 1042 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2022-11-20 20:54:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:12,036 INFO L93 Difference]: Finished difference Result 744 states and 1381 transitions. [2022-11-20 20:54:12,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:54:12,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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 29 [2022-11-20 20:54:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:12,040 INFO L225 Difference]: With dead ends: 744 [2022-11-20 20:54:12,041 INFO L226 Difference]: Without dead ends: 744 [2022-11-20 20:54:12,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-11-20 20:54:12,046 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:12,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 28 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 20:54:12,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-11-20 20:54:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 597. [2022-11-20 20:54:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 590 states have (on average 1.8915254237288135) internal successors, (1116), 596 states have internal predecessors, (1116), 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) [2022-11-20 20:54:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1116 transitions. [2022-11-20 20:54:12,081 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1116 transitions. Word has length 29 [2022-11-20 20:54:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:12,083 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 1116 transitions. [2022-11-20 20:54:12,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2022-11-20 20:54:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1116 transitions. [2022-11-20 20:54:12,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:12,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:12,086 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:12,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 20:54:12,086 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash -529722972, now seen corresponding path program 7 times [2022-11-20 20:54:12,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:12,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056517976] [2022-11-20 20:54:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:13,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:13,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056517976] [2022-11-20 20:54:13,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056517976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:13,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:13,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:54:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743318978] [2022-11-20 20:54:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:13,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:54:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:54:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:54:13,757 INFO L87 Difference]: Start difference. First operand 597 states and 1116 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2022-11-20 20:54:15,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:15,057 INFO L93 Difference]: Finished difference Result 720 states and 1339 transitions. [2022-11-20 20:54:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:54:15,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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 29 [2022-11-20 20:54:15,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:15,061 INFO L225 Difference]: With dead ends: 720 [2022-11-20 20:54:15,062 INFO L226 Difference]: Without dead ends: 720 [2022-11-20 20:54:15,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:54:15,063 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:15,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 28 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:54:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-11-20 20:54:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 597. [2022-11-20 20:54:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 590 states have (on average 1.8915254237288135) internal successors, (1116), 596 states have internal predecessors, (1116), 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) [2022-11-20 20:54:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1116 transitions. [2022-11-20 20:54:15,083 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1116 transitions. Word has length 29 [2022-11-20 20:54:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:15,083 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 1116 transitions. [2022-11-20 20:54:15,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 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) [2022-11-20 20:54:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1116 transitions. [2022-11-20 20:54:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:15,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:15,085 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:15,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 20:54:15,086 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1400817105, now seen corresponding path program 2 times [2022-11-20 20:54:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:15,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83187301] [2022-11-20 20:54:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:15,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:15,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83187301] [2022-11-20 20:54:15,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83187301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:15,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:15,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:54:15,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144598961] [2022-11-20 20:54:15,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:15,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:15,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:15,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:15,776 INFO L87 Difference]: Start difference. First operand 597 states and 1116 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:16,432 INFO L93 Difference]: Finished difference Result 633 states and 1182 transitions. [2022-11-20 20:54:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:54:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:16,436 INFO L225 Difference]: With dead ends: 633 [2022-11-20 20:54:16,436 INFO L226 Difference]: Without dead ends: 633 [2022-11-20 20:54:16,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:54:16,437 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:16,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:54:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-20 20:54:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 597. [2022-11-20 20:54:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 590 states have (on average 1.8915254237288135) internal successors, (1116), 596 states have internal predecessors, (1116), 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) [2022-11-20 20:54:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1116 transitions. [2022-11-20 20:54:16,459 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1116 transitions. Word has length 29 [2022-11-20 20:54:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:16,459 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 1116 transitions. [2022-11-20 20:54:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1116 transitions. [2022-11-20 20:54:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:16,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:16,461 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:16,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 20:54:16,462 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash 135177941, now seen corresponding path program 3 times [2022-11-20 20:54:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:16,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564045025] [2022-11-20 20:54:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:19,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564045025] [2022-11-20 20:54:19,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564045025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:19,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080217161] [2022-11-20 20:54:19,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:54:19,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:54:19,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:54:19,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:54:19,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:54:19,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:54:19,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 20:54:19,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:54:20,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 20:54:20,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 20:54:20,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-20 20:54:20,426 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:54:20,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:54:20,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-20 20:54:20,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-20 20:54:20,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:20,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:20,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:20,770 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:54:20,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2022-11-20 20:54:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:54:23,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:54:29,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2022-11-20 20:54:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:29,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080217161] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:29,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:54:29,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 42 [2022-11-20 20:54:29,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020056845] [2022-11-20 20:54:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:29,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:29,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:29,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1637, Unknown=2, NotChecked=0, Total=1806 [2022-11-20 20:54:29,737 INFO L87 Difference]: Start difference. First operand 597 states and 1116 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:29,798 INFO L93 Difference]: Finished difference Result 713 states and 1344 transitions. [2022-11-20 20:54:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:54:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:29,802 INFO L225 Difference]: With dead ends: 713 [2022-11-20 20:54:29,802 INFO L226 Difference]: Without dead ends: 713 [2022-11-20 20:54:29,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=167, Invalid=1637, Unknown=2, NotChecked=0, Total=1806 [2022-11-20 20:54:29,804 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:29,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 199 Unchecked, 0.1s Time] [2022-11-20 20:54:29,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-20 20:54:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 599. [2022-11-20 20:54:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 592 states have (on average 1.8918918918918919) internal successors, (1120), 598 states have internal predecessors, (1120), 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) [2022-11-20 20:54:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 1120 transitions. [2022-11-20 20:54:29,821 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 1120 transitions. Word has length 29 [2022-11-20 20:54:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:29,822 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 1120 transitions. [2022-11-20 20:54:29,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 1120 transitions. [2022-11-20 20:54:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:29,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:29,824 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:29,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:54:30,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:30,030 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash 138435731, now seen corresponding path program 4 times [2022-11-20 20:54:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:30,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758188392] [2022-11-20 20:54:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:30,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:30,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:30,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758188392] [2022-11-20 20:54:30,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758188392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:30,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:30,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:54:30,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283406861] [2022-11-20 20:54:30,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:30,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:30,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:30,802 INFO L87 Difference]: Start difference. First operand 599 states and 1120 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:31,563 INFO L93 Difference]: Finished difference Result 627 states and 1168 transitions. [2022-11-20 20:54:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:54:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:31,566 INFO L225 Difference]: With dead ends: 627 [2022-11-20 20:54:31,566 INFO L226 Difference]: Without dead ends: 627 [2022-11-20 20:54:31,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:54:31,566 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:31,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 27 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:54:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-20 20:54:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 597. [2022-11-20 20:54:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 590 states have (on average 1.8915254237288135) internal successors, (1116), 596 states have internal predecessors, (1116), 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) [2022-11-20 20:54:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1116 transitions. [2022-11-20 20:54:31,583 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1116 transitions. Word has length 29 [2022-11-20 20:54:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:31,583 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 1116 transitions. [2022-11-20 20:54:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1116 transitions. [2022-11-20 20:54:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:31,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:31,585 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:31,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 20:54:31,586 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:31,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1277214543, now seen corresponding path program 5 times [2022-11-20 20:54:31,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:31,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19594017] [2022-11-20 20:54:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:31,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:32,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:32,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19594017] [2022-11-20 20:54:32,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19594017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:32,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:32,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:54:32,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24517597] [2022-11-20 20:54:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:32,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:32,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:32,231 INFO L87 Difference]: Start difference. First operand 597 states and 1116 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:33,096 INFO L93 Difference]: Finished difference Result 612 states and 1143 transitions. [2022-11-20 20:54:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:54:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:33,099 INFO L225 Difference]: With dead ends: 612 [2022-11-20 20:54:33,099 INFO L226 Difference]: Without dead ends: 612 [2022-11-20 20:54:33,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:54:33,100 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:33,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 27 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 20:54:33,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-20 20:54:33,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 597. [2022-11-20 20:54:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 590 states have (on average 1.8915254237288135) internal successors, (1116), 596 states have internal predecessors, (1116), 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) [2022-11-20 20:54:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1116 transitions. [2022-11-20 20:54:33,115 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1116 transitions. Word has length 29 [2022-11-20 20:54:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:33,116 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 1116 transitions. [2022-11-20 20:54:33,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1116 transitions. [2022-11-20 20:54:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:33,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:33,117 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 20:54:33,118 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1602990194, now seen corresponding path program 8 times [2022-11-20 20:54:33,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:33,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109032858] [2022-11-20 20:54:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:34,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:34,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109032858] [2022-11-20 20:54:34,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109032858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:34,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:34,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:54:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376367904] [2022-11-20 20:54:34,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:34,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:34,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:34,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:34,561 INFO L87 Difference]: Start difference. First operand 597 states and 1116 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:35,799 INFO L93 Difference]: Finished difference Result 729 states and 1350 transitions. [2022-11-20 20:54:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:54:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:35,802 INFO L225 Difference]: With dead ends: 729 [2022-11-20 20:54:35,802 INFO L226 Difference]: Without dead ends: 721 [2022-11-20 20:54:35,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:54:35,804 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:35,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 28 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:54:35,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-11-20 20:54:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 562. [2022-11-20 20:54:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 555 states have (on average 1.8792792792792792) internal successors, (1043), 561 states have internal predecessors, (1043), 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) [2022-11-20 20:54:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1043 transitions. [2022-11-20 20:54:35,823 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1043 transitions. Word has length 29 [2022-11-20 20:54:35,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:35,823 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 1043 transitions. [2022-11-20 20:54:35,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1043 transitions. [2022-11-20 20:54:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:35,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:35,825 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 20:54:35,826 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 652624089, now seen corresponding path program 6 times [2022-11-20 20:54:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:35,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907191070] [2022-11-20 20:54:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:36,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907191070] [2022-11-20 20:54:36,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907191070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:36,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:36,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:54:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087908792] [2022-11-20 20:54:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:36,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:36,700 INFO L87 Difference]: Start difference. First operand 562 states and 1043 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:37,603 INFO L93 Difference]: Finished difference Result 749 states and 1367 transitions. [2022-11-20 20:54:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:54:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:37,606 INFO L225 Difference]: With dead ends: 749 [2022-11-20 20:54:37,607 INFO L226 Difference]: Without dead ends: 749 [2022-11-20 20:54:37,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:54:37,607 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:37,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 8 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:54:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-20 20:54:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 534. [2022-11-20 20:54:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 527 states have (on average 1.8766603415559773) internal successors, (989), 533 states have internal predecessors, (989), 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) [2022-11-20 20:54:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 989 transitions. [2022-11-20 20:54:37,626 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 989 transitions. Word has length 29 [2022-11-20 20:54:37,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:37,627 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 989 transitions. [2022-11-20 20:54:37,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 989 transitions. [2022-11-20 20:54:37,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:37,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:37,629 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:37,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 20:54:37,629 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1008915393, now seen corresponding path program 4 times [2022-11-20 20:54:37,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:37,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100793214] [2022-11-20 20:54:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:37,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:42,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:42,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100793214] [2022-11-20 20:54:42,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100793214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:42,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893017102] [2022-11-20 20:54:42,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:54:42,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:42,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:54:42,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:54:42,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:54:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:43,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 20:54:43,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:54:43,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:54:43,641 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:54:43,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:54:43,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 20:54:43,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 20:54:44,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 20:54:44,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 20:54:44,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:44,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:44,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:44,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:44,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:54:44,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2022-11-20 20:54:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:54:44,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:54:46,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-20 20:54:46,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-11-20 20:54:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:46,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893017102] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:46,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:54:46,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18, 16] total 39 [2022-11-20 20:54:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374296626] [2022-11-20 20:54:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:46,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:46,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:46,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 20:54:46,632 INFO L87 Difference]: Start difference. First operand 534 states and 989 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:47,396 INFO L93 Difference]: Finished difference Result 945 states and 1743 transitions. [2022-11-20 20:54:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:54:47,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:47,400 INFO L225 Difference]: With dead ends: 945 [2022-11-20 20:54:47,400 INFO L226 Difference]: Without dead ends: 945 [2022-11-20 20:54:47,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 20:54:47,401 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:47,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 394 Unchecked, 0.4s Time] [2022-11-20 20:54:47,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-11-20 20:54:47,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 544. [2022-11-20 20:54:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 1.8789571694599627) internal successors, (1009), 543 states have internal predecessors, (1009), 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) [2022-11-20 20:54:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1009 transitions. [2022-11-20 20:54:47,421 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1009 transitions. Word has length 29 [2022-11-20 20:54:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:47,422 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 1009 transitions. [2022-11-20 20:54:47,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:47,422 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1009 transitions. [2022-11-20 20:54:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:47,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:47,423 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:47,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:54:47,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 20:54:47,631 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1008960033, now seen corresponding path program 5 times [2022-11-20 20:54:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:47,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458061752] [2022-11-20 20:54:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:52,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:52,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458061752] [2022-11-20 20:54:52,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458061752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:52,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232924953] [2022-11-20 20:54:52,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:54:52,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:52,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:54:52,895 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:54:52,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:54:53,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 20:54:53,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:54:53,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 20:54:53,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:54:53,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:54:53,253 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:54:53,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:54:53,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 20:54:53,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 20:54:53,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 20:54:53,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:53,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:53,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:54:53,884 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:54:53,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-11-20 20:54:53,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:54:53,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 20:54:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:53,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:54:53,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232924953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:53,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:54:53,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 24 [2022-11-20 20:54:53,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783263074] [2022-11-20 20:54:53,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:53,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:54:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:54:53,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:54:53,922 INFO L87 Difference]: Start difference. First operand 544 states and 1009 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:55,341 INFO L93 Difference]: Finished difference Result 847 states and 1549 transitions. [2022-11-20 20:54:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:54:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:54:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:55,347 INFO L225 Difference]: With dead ends: 847 [2022-11-20 20:54:55,347 INFO L226 Difference]: Without dead ends: 839 [2022-11-20 20:54:55,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-11-20 20:54:55,348 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:55,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 8 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:54:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-11-20 20:54:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 596. [2022-11-20 20:54:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 589 states have (on average 1.8845500848896435) internal successors, (1110), 595 states have internal predecessors, (1110), 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) [2022-11-20 20:54:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1110 transitions. [2022-11-20 20:54:55,368 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1110 transitions. Word has length 29 [2022-11-20 20:54:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:55,369 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 1110 transitions. [2022-11-20 20:54:55,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:54:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1110 transitions. [2022-11-20 20:54:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:55,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:55,371 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:55,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 20:54:55,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:55,577 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash 123000726, now seen corresponding path program 9 times [2022-11-20 20:54:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146342678] [2022-11-20 20:54:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:55,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:54:58,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:58,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146342678] [2022-11-20 20:54:58,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146342678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:58,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:58,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:54:58,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184526414] [2022-11-20 20:54:58,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:58,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:54:58,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:58,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:54:58,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:54:58,032 INFO L87 Difference]: Start difference. First operand 596 states and 1110 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:54:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:59,692 INFO L93 Difference]: Finished difference Result 827 states and 1512 transitions. [2022-11-20 20:54:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 20:54:59,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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 29 [2022-11-20 20:54:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:59,697 INFO L225 Difference]: With dead ends: 827 [2022-11-20 20:54:59,697 INFO L226 Difference]: Without dead ends: 827 [2022-11-20 20:54:59,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:54:59,698 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:59,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 8 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 20:54:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-20 20:54:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 600. [2022-11-20 20:54:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 593 states have (on average 1.8853288364249579) internal successors, (1118), 599 states have internal predecessors, (1118), 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) [2022-11-20 20:54:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 1118 transitions. [2022-11-20 20:54:59,717 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 1118 transitions. Word has length 29 [2022-11-20 20:54:59,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:59,718 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 1118 transitions. [2022-11-20 20:54:59,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:54:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1118 transitions. [2022-11-20 20:54:59,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:54:59,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:59,720 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 20:54:59,720 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:54:59,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1223885584, now seen corresponding path program 10 times [2022-11-20 20:54:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:59,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625295928] [2022-11-20 20:54:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:55:01,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:01,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625295928] [2022-11-20 20:55:01,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625295928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:01,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:01,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:55:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157761202] [2022-11-20 20:55:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:01,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:55:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:55:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:55:01,077 INFO L87 Difference]: Start difference. First operand 600 states and 1118 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:02,107 INFO L93 Difference]: Finished difference Result 796 states and 1455 transitions. [2022-11-20 20:55:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:55:02,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:55:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:02,110 INFO L225 Difference]: With dead ends: 796 [2022-11-20 20:55:02,110 INFO L226 Difference]: Without dead ends: 788 [2022-11-20 20:55:02,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:55:02,111 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 93 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:02,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 8 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:55:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-20 20:55:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 556. [2022-11-20 20:55:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 549 states have (on average 1.8743169398907105) internal successors, (1029), 555 states have internal predecessors, (1029), 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) [2022-11-20 20:55:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1029 transitions. [2022-11-20 20:55:02,126 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1029 transitions. Word has length 29 [2022-11-20 20:55:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:02,126 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 1029 transitions. [2022-11-20 20:55:02,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1029 transitions. [2022-11-20 20:55:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:55:02,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:02,128 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:02,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 20:55:02,128 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:55:02,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:02,129 INFO L85 PathProgramCache]: Analyzing trace with hash -975802507, now seen corresponding path program 5 times [2022-11-20 20:55:02,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:02,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142374527] [2022-11-20 20:55:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:02,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:55:02,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:02,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142374527] [2022-11-20 20:55:02,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142374527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:02,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:02,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:55:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057039456] [2022-11-20 20:55:02,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:02,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:55:02,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:55:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:55:02,522 INFO L87 Difference]: Start difference. First operand 556 states and 1029 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:03,758 INFO L93 Difference]: Finished difference Result 782 states and 1427 transitions. [2022-11-20 20:55:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:55:03,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:55:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:03,761 INFO L225 Difference]: With dead ends: 782 [2022-11-20 20:55:03,761 INFO L226 Difference]: Without dead ends: 782 [2022-11-20 20:55:03,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-11-20 20:55:03,762 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:03,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 8 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:55:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-20 20:55:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 555. [2022-11-20 20:55:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 548 states have (on average 1.8740875912408759) internal successors, (1027), 554 states have internal predecessors, (1027), 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) [2022-11-20 20:55:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1027 transitions. [2022-11-20 20:55:03,777 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1027 transitions. Word has length 29 [2022-11-20 20:55:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:03,777 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 1027 transitions. [2022-11-20 20:55:03,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1027 transitions. [2022-11-20 20:55:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:55:03,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:03,779 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:03,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 20:55:03,780 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:55:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash -942734497, now seen corresponding path program 6 times [2022-11-20 20:55:03,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:03,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357537776] [2022-11-20 20:55:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:03,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:55:09,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:09,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357537776] [2022-11-20 20:55:09,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357537776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:55:09,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687148063] [2022-11-20 20:55:09,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:55:09,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:55:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:55:09,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:55:09,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 20:55:10,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:55:10,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:55:10,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 20:55:10,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:55:10,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:55:10,207 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:55:10,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:55:10,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 20:55:10,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 20:55:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:10,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:10,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:55:10,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-11-20 20:55:10,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:55:10,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 20:55:10,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:55:10,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 20:55:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 20:55:10,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:55:11,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-20 20:55:11,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-11-20 20:55:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:55:11,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687148063] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:55:11,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:55:11,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 9] total 29 [2022-11-20 20:55:11,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049665606] [2022-11-20 20:55:11,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:55:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:55:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-20 20:55:11,388 INFO L87 Difference]: Start difference. First operand 555 states and 1027 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:12,258 INFO L93 Difference]: Finished difference Result 792 states and 1435 transitions. [2022-11-20 20:55:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:55:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:55:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:12,261 INFO L225 Difference]: With dead ends: 792 [2022-11-20 20:55:12,262 INFO L226 Difference]: Without dead ends: 792 [2022-11-20 20:55:12,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 20:55:12,263 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:12,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 330 Invalid, 0 Unknown, 69 Unchecked, 0.6s Time] [2022-11-20 20:55:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-11-20 20:55:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 557. [2022-11-20 20:55:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 550 states have (on average 1.8745454545454545) internal successors, (1031), 556 states have internal predecessors, (1031), 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) [2022-11-20 20:55:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 1031 transitions. [2022-11-20 20:55:12,280 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 1031 transitions. Word has length 29 [2022-11-20 20:55:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:12,280 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 1031 transitions. [2022-11-20 20:55:12,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 1031 transitions. [2022-11-20 20:55:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:55:12,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:12,282 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:12,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 20:55:12,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 20:55:12,490 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:55:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash -941638957, now seen corresponding path program 7 times [2022-11-20 20:55:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:12,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929721675] [2022-11-20 20:55:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:55:13,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:13,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929721675] [2022-11-20 20:55:13,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929721675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:13,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:13,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:55:13,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567704759] [2022-11-20 20:55:13,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:13,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:55:13,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:55:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:55:13,178 INFO L87 Difference]: Start difference. First operand 557 states and 1031 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:14,144 INFO L93 Difference]: Finished difference Result 784 states and 1428 transitions. [2022-11-20 20:55:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:55:14,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:55:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:14,146 INFO L225 Difference]: With dead ends: 784 [2022-11-20 20:55:14,146 INFO L226 Difference]: Without dead ends: 784 [2022-11-20 20:55:14,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:55:14,147 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:14,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 8 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:55:14,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-20 20:55:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 561. [2022-11-20 20:55:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 554 states have (on average 1.8754512635379061) internal successors, (1039), 560 states have internal predecessors, (1039), 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) [2022-11-20 20:55:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1039 transitions. [2022-11-20 20:55:14,164 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1039 transitions. Word has length 29 [2022-11-20 20:55:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:14,164 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 1039 transitions. [2022-11-20 20:55:14,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1039 transitions. [2022-11-20 20:55:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:55:14,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:14,166 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:14,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 20:55:14,167 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:55:14,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash -941602687, now seen corresponding path program 8 times [2022-11-20 20:55:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:14,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677032699] [2022-11-20 20:55:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:55:15,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:15,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677032699] [2022-11-20 20:55:15,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677032699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:15,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:15,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:55:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527895572] [2022-11-20 20:55:15,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:15,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:55:15,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:15,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:55:15,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:55:15,004 INFO L87 Difference]: Start difference. First operand 561 states and 1039 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:15,895 INFO L93 Difference]: Finished difference Result 775 states and 1411 transitions. [2022-11-20 20:55:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:55:15,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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 29 [2022-11-20 20:55:15,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:15,898 INFO L225 Difference]: With dead ends: 775 [2022-11-20 20:55:15,898 INFO L226 Difference]: Without dead ends: 775 [2022-11-20 20:55:15,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:55:15,899 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:15,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 8 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:55:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-11-20 20:55:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 527. [2022-11-20 20:55:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 520 states have (on average 1.873076923076923) internal successors, (974), 526 states have internal predecessors, (974), 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) [2022-11-20 20:55:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 974 transitions. [2022-11-20 20:55:15,915 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 974 transitions. Word has length 29 [2022-11-20 20:55:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:15,915 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 974 transitions. [2022-11-20 20:55:15,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 9 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) [2022-11-20 20:55:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 974 transitions. [2022-11-20 20:55:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:55:15,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:15,917 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:15,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 20:55:15,918 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:55:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash 457228823, now seen corresponding path program 6 times [2022-11-20 20:55:15,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:15,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569292753] [2022-11-20 20:55:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:55:18,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:18,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569292753] [2022-11-20 20:55:18,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569292753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:55:18,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:55:18,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 20:55:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709265567] [2022-11-20 20:55:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:18,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:55:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:55:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:55:18,111 INFO L87 Difference]: Start difference. First operand 527 states and 974 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:55:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:19,670 INFO L93 Difference]: Finished difference Result 658 states and 1215 transitions. [2022-11-20 20:55:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:55:19,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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 29 [2022-11-20 20:55:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:19,672 INFO L225 Difference]: With dead ends: 658 [2022-11-20 20:55:19,672 INFO L226 Difference]: Without dead ends: 658 [2022-11-20 20:55:19,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:55:19,673 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:19,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 8 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 20:55:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-20 20:55:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 543. [2022-11-20 20:55:19,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 536 states have (on average 1.876865671641791) internal successors, (1006), 542 states have internal predecessors, (1006), 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) [2022-11-20 20:55:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1006 transitions. [2022-11-20 20:55:19,689 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1006 transitions. Word has length 29 [2022-11-20 20:55:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:19,690 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 1006 transitions. [2022-11-20 20:55:19,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:55:19,690 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1006 transitions. [2022-11-20 20:55:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:55:19,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:19,692 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:19,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 20:55:19,692 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:55:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash -634011805, now seen corresponding path program 7 times [2022-11-20 20:55:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:19,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345630092] [2022-11-20 20:55:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:55:30,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:55:30,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345630092] [2022-11-20 20:55:30,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345630092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:55:30,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494486518] [2022-11-20 20:55:30,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:55:30,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:55:30,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:55:30,309 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:55:30,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 20:55:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:55:30,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 20:55:30,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:55:30,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:55:30,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 20:55:30,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 20:55:31,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 20:55:31,216 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:55:31,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:55:31,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 20:55:31,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-20 20:55:31,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-20 20:55:31,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-20 20:55:31,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:31,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 89 [2022-11-20 20:55:32,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:55:32,198 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:55:32,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 98 [2022-11-20 20:55:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 20:55:34,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:55:43,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-20 20:55:43,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2022-11-20 20:55:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:55:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494486518] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:55:43,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:55:43,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21, 17] total 41 [2022-11-20 20:55:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726242812] [2022-11-20 20:55:43,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:55:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:55:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:55:43,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:55:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1418, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 20:55:43,843 INFO L87 Difference]: Start difference. First operand 543 states and 1006 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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) [2022-11-20 20:55:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:55:46,046 INFO L93 Difference]: Finished difference Result 874 states and 1642 transitions. [2022-11-20 20:55:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:55:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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 29 [2022-11-20 20:55:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:55:46,049 INFO L225 Difference]: With dead ends: 874 [2022-11-20 20:55:46,049 INFO L226 Difference]: Without dead ends: 874 [2022-11-20 20:55:46,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=361, Invalid=1709, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 20:55:46,050 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 358 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:55:46,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 5 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 358 Unchecked, 0.3s Time] [2022-11-20 20:55:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2022-11-20 20:55:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 544. [2022-11-20 20:55:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 1.8770949720670391) internal successors, (1008), 543 states have internal predecessors, (1008), 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) [2022-11-20 20:55:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1008 transitions. [2022-11-20 20:55:46,067 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1008 transitions. Word has length 29 [2022-11-20 20:55:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:55:46,068 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 1008 transitions. [2022-11-20 20:55:46,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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) [2022-11-20 20:55:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1008 transitions. [2022-11-20 20:55:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:55:46,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:55:46,070 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:55:46,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:55:46,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 20:55:46,278 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:55:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:55:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash -633060415, now seen corresponding path program 8 times [2022-11-20 20:55:46,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:55:46,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512528782] [2022-11-20 20:55:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:55:46,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:55:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:56:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:56:19,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:56:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512528782] [2022-11-20 20:56:19,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512528782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:56:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433777070] [2022-11-20 20:56:19,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:56:19,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:56:19,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:56:19,383 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:56:19,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 20:56:19,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 20:56:19,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:56:19,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-20 20:56:19,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:56:19,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 20:56:19,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 20:56:19,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 20:56:19,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 20:56:20,038 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 20:56:20,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2022-11-20 20:56:20,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-20 20:56:20,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-20 20:56:20,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-20 20:56:20,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-20 20:56:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 89 [2022-11-20 20:56:20,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:56:20,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:56:20,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 106 treesize of output 123 [2022-11-20 20:56:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 20:56:29,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:56:29,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433777070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:56:29,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:56:29,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 31 [2022-11-20 20:56:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922232921] [2022-11-20 20:56:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:56:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:56:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:56:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:56:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=866, Unknown=3, NotChecked=0, Total=992 [2022-11-20 20:56:29,045 INFO L87 Difference]: Start difference. First operand 544 states and 1008 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:56:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:56:36,548 INFO L93 Difference]: Finished difference Result 756 states and 1401 transitions. [2022-11-20 20:56:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:56:36,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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 29 [2022-11-20 20:56:36,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:56:36,552 INFO L225 Difference]: With dead ends: 756 [2022-11-20 20:56:36,552 INFO L226 Difference]: Without dead ends: 756 [2022-11-20 20:56:36,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=180, Invalid=1147, Unknown=5, NotChecked=0, Total=1332 [2022-11-20 20:56:36,554 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 85 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:56:36,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 8 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 474 Invalid, 0 Unknown, 146 Unchecked, 1.1s Time] [2022-11-20 20:56:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-11-20 20:56:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 543. [2022-11-20 20:56:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 536 states have (on average 1.876865671641791) internal successors, (1006), 542 states have internal predecessors, (1006), 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) [2022-11-20 20:56:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1006 transitions. [2022-11-20 20:56:36,572 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1006 transitions. Word has length 29 [2022-11-20 20:56:36,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:56:36,572 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 1006 transitions. [2022-11-20 20:56:36,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 11 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) [2022-11-20 20:56:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1006 transitions. [2022-11-20 20:56:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 20:56:36,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:56:36,574 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:56:36,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 20:56:36,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c54770-9e7a-4425-9152-791f85760526/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 20:56:36,775 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 20:56:36,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:56:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1411725781, now seen corresponding path program 9 times [2022-11-20 20:56:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:56:36,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372176067] [2022-11-20 20:56:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:56:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:56:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat