./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:30:35,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:30:35,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:30:35,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:30:35,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:30:35,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:30:35,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:30:35,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:30:35,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:30:35,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:30:35,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:30:35,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:30:35,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:30:35,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:30:35,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:30:35,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:30:35,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:30:35,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:30:35,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:30:35,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:30:35,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:30:35,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:30:35,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:30:35,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:30:35,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:30:35,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:30:35,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:30:35,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:30:35,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:30:35,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:30:35,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:30:35,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:30:35,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:30:35,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:30:35,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:30:35,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:30:35,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:30:35,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:30:35,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:30:35,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:30:35,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:30:35,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:30:35,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:30:35,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:30:35,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:30:35,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:30:35,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:30:35,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:30:35,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:30:35,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:30:35,643 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:30:35,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:30:35,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:30:35,645 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:30:35,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:30:35,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:30:35,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:30:35,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:30:35,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:30:35,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:30:35,647 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:30:35,647 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:30:35,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:30:35,647 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:30:35,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:30:35,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:30:35,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:30:35,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:30:35,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:30:35,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:30:35,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:30:35,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:30:35,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:30:35,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:30:35,650 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:30:35,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:30:35,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:30:35,650 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_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d [2022-11-02 20:30:35,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:30:35,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:30:35,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:30:35,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:30:35,966 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:30:35,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-02 20:30:36,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/data/d6f499a79/65581e7e454246a88691b471413f0170/FLAG586d586dc [2022-11-02 20:30:36,479 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:30:36,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2022-11-02 20:30:36,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/data/d6f499a79/65581e7e454246a88691b471413f0170/FLAG586d586dc [2022-11-02 20:30:36,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/data/d6f499a79/65581e7e454246a88691b471413f0170 [2022-11-02 20:30:36,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:30:36,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:30:36,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:30:36,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:30:36,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:30:36,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:30:36" (1/1) ... [2022-11-02 20:30:36,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295cdbf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:36, skipping insertion in model container [2022-11-02 20:30:36,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:30:36" (1/1) ... [2022-11-02 20:30:36,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:30:36,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:30:37,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-02 20:30:37,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:30:37,199 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:30:37,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2022-11-02 20:30:37,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:30:37,329 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:30:37,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37 WrapperNode [2022-11-02 20:30:37,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:30:37,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:30:37,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:30:37,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:30:37,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,434 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 661 [2022-11-02 20:30:37,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:30:37,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:30:37,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:30:37,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:30:37,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,491 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:30:37,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:30:37,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:30:37,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:30:37,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (1/1) ... [2022-11-02 20:30:37,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:30:37,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:30:37,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:30:37,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2666d8f7-7968-4680-9d0b-1be23299d706/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:30:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:30:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:30:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:30:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:30:37,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:30:37,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:30:37,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:30:37,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:30:37,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:30:37,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:30:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:30:37,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:30:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:30:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:30:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:30:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:30:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:30:37,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:30:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:30:37,589 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:30:37,795 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:30:37,813 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:30:38,925 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:30:39,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:30:39,390 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-02 20:30:39,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:30:39 BoogieIcfgContainer [2022-11-02 20:30:39,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:30:39,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:30:39,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:30:39,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:30:39,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:30:36" (1/3) ... [2022-11-02 20:30:39,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318be935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:30:39, skipping insertion in model container [2022-11-02 20:30:39,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:30:37" (2/3) ... [2022-11-02 20:30:39,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318be935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:30:39, skipping insertion in model container [2022-11-02 20:30:39,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:30:39" (3/3) ... [2022-11-02 20:30:39,409 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-11-02 20:30:39,422 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:30:39,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:30:39,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2022-11-02 20:30:39,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:30:39,649 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:30:39,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 616 places, 642 transitions, 1308 flow [2022-11-02 20:30:40,055 INFO L130 PetriNetUnfolder]: 36/639 cut-off events. [2022-11-02 20:30:40,055 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:30:40,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 639 events. 36/639 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2049 event pairs, 0 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 490. Up to 2 conditions per place. [2022-11-02 20:30:40,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 616 places, 642 transitions, 1308 flow [2022-11-02 20:30:40,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 594 places, 619 transitions, 1256 flow [2022-11-02 20:30:40,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:30:40,116 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=PETRI_NET, 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;@6de85ed6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:30:40,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 151 error locations. [2022-11-02 20:30:40,121 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2022-11-02 20:30:40,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:30:40,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:40,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:40,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 147 more)] === [2022-11-02 20:30:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash -476637533, now seen corresponding path program 1 times [2022-11-02 20:30:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:40,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652252959] [2022-11-02 20:30:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:40,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:30:40,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:40,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652252959] [2022-11-02 20:30:40,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652252959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:40,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:30:40,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:30:40,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979229387] [2022-11-02 20:30:40,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:40,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:30:40,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:40,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:30:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:30:40,487 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 568 out of 642 [2022-11-02 20:30:40,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 619 transitions, 1256 flow. Second operand has 3 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 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) [2022-11-02 20:30:40,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:30:40,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 568 of 642 [2022-11-02 20:30:40,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:30:41,881 INFO L130 PetriNetUnfolder]: 219/2356 cut-off events. [2022-11-02 20:30:41,881 INFO L131 PetriNetUnfolder]: For 118/130 co-relation queries the response was YES. [2022-11-02 20:30:41,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 2356 events. 219/2356 cut-off events. For 118/130 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 18252 event pairs, 114 based on Foata normal form. 94/1970 useless extension candidates. Maximal degree in co-relation 1570. Up to 232 conditions per place. [2022-11-02 20:30:41,924 INFO L137 encePairwiseOnDemand]: 594/642 looper letters, 24 selfloop transitions, 2 changer transitions 8/573 dead transitions. [2022-11-02 20:30:41,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 573 transitions, 1216 flow [2022-11-02 20:30:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:30:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:30:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1776 transitions. [2022-11-02 20:30:41,950 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9221183800623053 [2022-11-02 20:30:41,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1776 transitions. [2022-11-02 20:30:41,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1776 transitions. [2022-11-02 20:30:41,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:30:41,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1776 transitions. [2022-11-02 20:30:41,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 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) [2022-11-02 20:30:41,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:41,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:41,982 INFO L175 Difference]: Start difference. First operand has 594 places, 619 transitions, 1256 flow. Second operand 3 states and 1776 transitions. [2022-11-02 20:30:41,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 573 transitions, 1216 flow [2022-11-02 20:30:41,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 573 transitions, 1204 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:30:42,007 INFO L231 Difference]: Finished difference. Result has 562 places, 565 transitions, 1140 flow [2022-11-02 20:30:42,010 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1140, PETRI_PLACES=562, PETRI_TRANSITIONS=565} [2022-11-02 20:30:42,015 INFO L287 CegarLoopForPetriNet]: 594 programPoint places, -32 predicate places. [2022-11-02 20:30:42,015 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 565 transitions, 1140 flow [2022-11-02 20:30:42,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 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) [2022-11-02 20:30:42,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:42,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:42,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:30:42,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 147 more)] === [2022-11-02 20:30:42,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1743612450, now seen corresponding path program 1 times [2022-11-02 20:30:42,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:42,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121013199] [2022-11-02 20:30:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:30:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:42,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121013199] [2022-11-02 20:30:42,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121013199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:42,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:30:42,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:30:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691087280] [2022-11-02 20:30:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:42,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:30:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:30:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:30:42,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 565 out of 642 [2022-11-02 20:30:42,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 565 transitions, 1140 flow. Second operand has 3 states, 3 states have (on average 566.3333333333334) internal successors, (1699), 3 states have internal predecessors, (1699), 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) [2022-11-02 20:30:42,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:30:42,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 565 of 642 [2022-11-02 20:30:42,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:30:43,276 INFO L130 PetriNetUnfolder]: 179/2092 cut-off events. [2022-11-02 20:30:43,277 INFO L131 PetriNetUnfolder]: For 16/33 co-relation queries the response was YES. [2022-11-02 20:30:43,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 2092 events. 179/2092 cut-off events. For 16/33 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 15205 event pairs, 90 based on Foata normal form. 0/1691 useless extension candidates. Maximal degree in co-relation 2280. Up to 203 conditions per place. [2022-11-02 20:30:43,317 INFO L137 encePairwiseOnDemand]: 639/642 looper letters, 27 selfloop transitions, 2 changer transitions 0/564 dead transitions. [2022-11-02 20:30:43,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 564 transitions, 1196 flow [2022-11-02 20:30:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:30:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:30:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1725 transitions. [2022-11-02 20:30:43,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8956386292834891 [2022-11-02 20:30:43,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1725 transitions. [2022-11-02 20:30:43,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1725 transitions. [2022-11-02 20:30:43,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:30:43,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1725 transitions. [2022-11-02 20:30:43,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 575.0) internal successors, (1725), 3 states have internal predecessors, (1725), 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) [2022-11-02 20:30:43,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:43,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:43,337 INFO L175 Difference]: Start difference. First operand has 562 places, 565 transitions, 1140 flow. Second operand 3 states and 1725 transitions. [2022-11-02 20:30:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 564 transitions, 1196 flow [2022-11-02 20:30:43,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 564 transitions, 1192 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:30:43,352 INFO L231 Difference]: Finished difference. Result has 553 places, 564 transitions, 1138 flow [2022-11-02 20:30:43,353 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1138, PETRI_PLACES=553, PETRI_TRANSITIONS=564} [2022-11-02 20:30:43,353 INFO L287 CegarLoopForPetriNet]: 594 programPoint places, -41 predicate places. [2022-11-02 20:30:43,354 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 564 transitions, 1138 flow [2022-11-02 20:30:43,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 566.3333333333334) internal successors, (1699), 3 states have internal predecessors, (1699), 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) [2022-11-02 20:30:43,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:43,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:43,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:30:43,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 147 more)] === [2022-11-02 20:30:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash -2108473801, now seen corresponding path program 1 times [2022-11-02 20:30:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:43,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376573370] [2022-11-02 20:30:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:30:43,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:43,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376573370] [2022-11-02 20:30:43,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376573370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:43,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:30:43,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:30:43,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239276701] [2022-11-02 20:30:43,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:43,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:30:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:30:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:30:43,475 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 568 out of 642 [2022-11-02 20:30:43,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 564 transitions, 1138 flow. Second operand has 3 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 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) [2022-11-02 20:30:43,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:30:43,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 568 of 642 [2022-11-02 20:30:43,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:30:44,188 INFO L130 PetriNetUnfolder]: 138/1860 cut-off events. [2022-11-02 20:30:44,189 INFO L131 PetriNetUnfolder]: For 14/23 co-relation queries the response was YES. [2022-11-02 20:30:44,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1860 events. 138/1860 cut-off events. For 14/23 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12637 event pairs, 59 based on Foata normal form. 0/1538 useless extension candidates. Maximal degree in co-relation 1973. Up to 138 conditions per place. [2022-11-02 20:30:44,221 INFO L137 encePairwiseOnDemand]: 636/642 looper letters, 20 selfloop transitions, 1 changer transitions 0/559 dead transitions. [2022-11-02 20:30:44,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 559 transitions, 1170 flow [2022-11-02 20:30:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:30:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:30:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1730 transitions. [2022-11-02 20:30:44,228 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8982346832814122 [2022-11-02 20:30:44,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1730 transitions. [2022-11-02 20:30:44,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1730 transitions. [2022-11-02 20:30:44,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:30:44,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1730 transitions. [2022-11-02 20:30:44,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 576.6666666666666) internal successors, (1730), 3 states have internal predecessors, (1730), 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) [2022-11-02 20:30:44,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:44,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:44,240 INFO L175 Difference]: Start difference. First operand has 553 places, 564 transitions, 1138 flow. Second operand 3 states and 1730 transitions. [2022-11-02 20:30:44,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 559 transitions, 1170 flow [2022-11-02 20:30:44,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 559 transitions, 1166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:30:44,250 INFO L231 Difference]: Finished difference. Result has 548 places, 559 transitions, 1126 flow [2022-11-02 20:30:44,251 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1126, PETRI_PLACES=548, PETRI_TRANSITIONS=559} [2022-11-02 20:30:44,254 INFO L287 CegarLoopForPetriNet]: 594 programPoint places, -46 predicate places. [2022-11-02 20:30:44,254 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 559 transitions, 1126 flow [2022-11-02 20:30:44,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 569.3333333333334) internal successors, (1708), 3 states have internal predecessors, (1708), 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) [2022-11-02 20:30:44,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:44,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:30:44,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 147 more)] === [2022-11-02 20:30:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1756411960, now seen corresponding path program 1 times [2022-11-02 20:30:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:44,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616430579] [2022-11-02 20:30:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:44,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:30:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:44,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616430579] [2022-11-02 20:30:44,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616430579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:44,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:30:44,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:30:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506716027] [2022-11-02 20:30:44,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:44,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:30:44,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:44,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:30:44,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:30:44,351 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 562 out of 642 [2022-11-02 20:30:44,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 559 transitions, 1126 flow. Second operand has 3 states, 3 states have (on average 563.3333333333334) internal successors, (1690), 3 states have internal predecessors, (1690), 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) [2022-11-02 20:30:44,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:30:44,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 562 of 642 [2022-11-02 20:30:44,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:30:47,672 INFO L130 PetriNetUnfolder]: 1903/12614 cut-off events. [2022-11-02 20:30:47,672 INFO L131 PetriNetUnfolder]: For 146/153 co-relation queries the response was YES. [2022-11-02 20:30:47,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14861 conditions, 12614 events. 1903/12614 cut-off events. For 146/153 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 153258 event pairs, 1071 based on Foata normal form. 0/10034 useless extension candidates. Maximal degree in co-relation 14817. Up to 2169 conditions per place. [2022-11-02 20:30:47,985 INFO L137 encePairwiseOnDemand]: 639/642 looper letters, 30 selfloop transitions, 2 changer transitions 0/558 dead transitions. [2022-11-02 20:30:47,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 558 transitions, 1188 flow [2022-11-02 20:30:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:30:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:30:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1719 transitions. [2022-11-02 20:30:47,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8925233644859814 [2022-11-02 20:30:47,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1719 transitions. [2022-11-02 20:30:47,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1719 transitions. [2022-11-02 20:30:47,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:30:47,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1719 transitions. [2022-11-02 20:30:47,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 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) [2022-11-02 20:30:47,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:48,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 642.0) internal successors, (2568), 4 states have internal predecessors, (2568), 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) [2022-11-02 20:30:48,001 INFO L175 Difference]: Start difference. First operand has 548 places, 559 transitions, 1126 flow. Second operand 3 states and 1719 transitions. [2022-11-02 20:30:48,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 558 transitions, 1188 flow [2022-11-02 20:30:48,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 558 transitions, 1187 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:30:48,012 INFO L231 Difference]: Finished difference. Result has 548 places, 558 transitions, 1127 flow [2022-11-02 20:30:48,013 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1127, PETRI_PLACES=548, PETRI_TRANSITIONS=558} [2022-11-02 20:30:48,013 INFO L287 CegarLoopForPetriNet]: 594 programPoint places, -46 predicate places. [2022-11-02 20:30:48,013 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 558 transitions, 1127 flow [2022-11-02 20:30:48,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 563.3333333333334) internal successors, (1690), 3 states have internal predecessors, (1690), 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) [2022-11-02 20:30:48,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:30:48,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:30:48,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:30:48,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 147 more)] === [2022-11-02 20:30:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:30:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash -761928708, now seen corresponding path program 1 times [2022-11-02 20:30:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:30:48,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284088153] [2022-11-02 20:30:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:30:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:30:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:30:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:30:48,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:30:48,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284088153] [2022-11-02 20:30:48,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284088153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:30:48,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:30:48,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:30:48,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847900891] [2022-11-02 20:30:48,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:30:48,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:30:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:30:48,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:30:48,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:30:48,556 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 642 [2022-11-02 20:30:48,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 558 transitions, 1127 flow. Second operand has 6 states, 6 states have (on average 440.8333333333333) internal successors, (2645), 6 states have internal predecessors, (2645), 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) [2022-11-02 20:30:48,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:30:48,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 642 [2022-11-02 20:30:48,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand